*** Bug 55370 has been marked as a duplicate of this bug. ***

*** Bug 53675 has been marked as a duplicate of this bug. ***

*** Bug 53952 has been marked as a duplicate of this bug. ***

*** Bug 51934 has been marked as a duplicate of this bug. ***

From  #51934: 
"when repeatingly clicking on a SMB (folder) in the LANbrowser (wich uses Lisa) koqueror 
crashes " 
  
  
  

I can semi-reproduce this, using Valgrind.  
It seems like when two views/windows are pointing to the same dir, sometimes the DirLister gets 
confused... At any rate, vg reports bogus KURL pointers being passed to top-level routines.. But 
some other things it states don't quite make sense 
 

Maksim: can you still reproduce it after the last week's fixes?  

It might have fixed one crash, but I can still toggle a few more seemingly related ones. 
(This is not something that's perfectly reproducible) 
 
A procedure that seems to show up bugs like this somewhat frequently: 
Make sure Konqui set to open new windows from existing processes.  
run Konqueror in Valgrind.  
While it's in the middle of listing, run an another.  
 
When they both show icons, enter a directory. 
This time I get this: 
 
==4229== Invalid read of size 1 
==4229==    at 0x409D16FB: KURL::equals(KURL const&, bool) const (in 
/code/opt/kde3/lib/libkdecore.so.4.2.0) 
==4229==    by 0x409D16C4: KURL::cmp(KURL const&, bool) const (in 
/code/opt/kde3/lib/libkdecore.so.4.2.0) 
==4229==    by 0x405532DE: KDirLister::slotJobToBeKilled(KURL const&) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x4055413C: KDirLister::qt_invoke(int, QUObject*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x40D222AF: QObject::activate_signal(QConnectionList*, QUObject*) 
(in /usr/lib/qt3/lib/libqt-mt.so.3.1.2) 
==4229==    by 0x405538A8: KDirLister::canceled(KURL const&) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x4054CBBD: KDirListerCache::stop(KDirLister*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x40551774: KDirLister::stop() (in /code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x4680CEC2: KonqKfmIconView::doCloseURL() 
(konq_iconview.cc:613) 
==4229==    by 0x40334E8D: KonqDirPart::closeURL() (konq_dirpart.cc:496) 
==4229==    by 0x40266B98: KonqView::stop() (konq_view.cc:808) 
==4229==    by 0x402933AE: KonqMainWindow::abortLoading() 
(konq_mainwindow.cc:924) 
==4229==    by 0x402906DA: KonqMainWindow::openURL(KonqView*, KURL const&, 
QString const&, KonqOpenURLRequest const&, bool) (konq_mainwindow.cc:476) 
==4229==    by 0x40292DA6: KonqMainWindow::openURL(KonqView*, KURL const&, 
KParts::URLArgs const&) (konq_mainwindow.cc:862) 
==4229==    by 0x40292AED: KonqMainWindow::slotOpenURLRequest(KURL const&, 
KParts::URLArgs const&) (konq_mainwindow.cc:840) 
==4229==    by 0x402AA943: KonqMainWindow::qt_invoke(int, QUObject*) 
(konq_mainwindow.moc:509) 
==4229==    Address 0x45E9DBA0 is not stack'd, malloc'd or free'd 
konqueror: KonqView::slotCanceled 
konqueror: KonqView::slotCompleted hasPending=false 
konqueror: Saving part URL : file:/home/Maksim in history position 0 
konqueror: Saving location bar URL : file:/home/Maksim in history position 0 
konqueror: Saving title : file:/home/Maksim in history position 0 
konqueror: [void KonqView::setLoading(bool, bool)] loading=false hasPending=false 
konqueror: [void KonqView::setLoading(bool, bool)] loading=false hasPending=false 
konqueror: Saving part URL : file:/home/Maksim in history position 0 
konqueror: Saving location bar URL : file:/home/Maksim in history position 0 
konqueror: Saving title : file:/home/Maksim in history position 0 
konqueror: setLocationBarURL : url = file:/home/Maksim/.icons 
konqueror: KonqMainWindow::setLocationBarURL: url = file:/home/Maksim/.icons 
konqueror: trying openView for file:/home/Maksim/.icons (servicetype inode/directory) 
konqueror: KonqMainWindow::openView inode/directory file:/home/Maksim/.icons 
0x47835528 
konqueror: req.args.frameName= 
konqueror: req.followMode=false 
konqueror: req.nameFilter= 
konqueror: req.typedURL= 
konqueror: req.newTab= false 
konqueror: req.newTabInFront= false 
konqueror: req.openAfterCurrentPage= false 
konqueror: makeViewsFollow KonqView url=file:/home/Maksim/.icons 
serviceType=inode/directory 
konqueror: serviceName= m_sViewModeForDirectory=konq_iconview 
konqueror: serviceName= 
konqueror: changeViewMode: serviceType is inode/directory serviceName is  current 
service name is konq_iconview 
konqueror: KonqView::openURL url=file:/home/Maksim/.icons 
locationBarURL=file:/home/Maksim/.icons 
konqueror: m_bLockedLocation=0 args.lockHistory()=false 
konqueror: Truncating history 
konqueror: Append a new entry 
konqueror: at=1 count=2 
konqueror: KonqView::setLocationBarURL file:/home/Maksim/.icons this=0x47835528 
konqueror: KonqMainWindow::setLocationBarURL: url = file:/home/Maksim/.icons 
konqueror: [void KonqView::setLoading(bool, bool)] loading=true hasPending=false 
konqueror: KonqKfmIconView::slotRenderingFinished() 
konqueror: KonqKfmIconView::slotRenderingFinished() 
konqueror: KonqMainWindow::setCaption(file:/home/Maksim/.icons) 
konqueror: Saving part URL : file:/home/Maksim/.icons in history position 1 
konqueror: Saving title : file:/home/Maksim/.icons in history position 1 
libkonq: ## addToHistory: file:/home/Maksim/.iconsTyped URL: 
file:/home/Maksim/.icons, Title: 
konqueror: Current position : 1 
konqueror: KonqMainWindow::openView ok=true bOthersFollowed=false returning true 
konqueror: KonqKfmIconView::slotRefreshItems '.icons' ivi=0x441344d8 
konqueror: KonqKfmIconView::slotRefreshItems '.gnupg' ivi=0x4652d0cc 
konqueror: KonqKfmIconView::slotRefreshItems '.xsession-errors' ivi=0x440dfcbc 
konqueror: KonqKfmIconView::slotRefreshItems '.icons' ivi=0x441344d8 
==4229== 
==4229== Invalid read of size 4 
==4229==    at 0x40F78B09: QString::QString(QString const&) (in 
/usr/lib/qt3/lib/libqt-mt.so.3.1.2) 
==4229==    by 0x409D1734: KURL::equals(KURL const&, bool) const (in 
/code/opt/kde3/lib/libkdecore.so.4.2.0) 
==4229==    by 0x409D16C4: KURL::cmp(KURL const&, bool) const (in 
/code/opt/kde3/lib/libkdecore.so.4.2.0) 
==4229==    by 0x405532DE: KDirLister::slotJobToBeKilled(KURL const&) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x4055413C: KDirLister::qt_invoke(int, QUObject*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x40D22338: QObject::activate_signal(QConnectionList*, QUObject*) 
(in /usr/lib/qt3/lib/libqt-mt.so.3.1.2) 
==4229==    by 0x405537B8: KDirLister::completed(KURL const&) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x4055093A: KDirListerCache::slotUpdateResult(KIO::Job*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x405547CE: KDirListerCache::qt_invoke(int, QUObject*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x40D22338: QObject::activate_signal(QConnectionList*, QUObject*) 
(in /usr/lib/qt3/lib/libqt-mt.so.3.1.2) 
==4229==    by 0x404BD995: KIO::Job::result(KIO::Job*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x404AAC01: KIO::Job::emitResult() (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x404ABF8A: KIO::SimpleJob::slotFinished() (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x404B2B8D: KIO::ListJob::slotFinished() (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x404BFDAF: KIO::ListJob::qt_invoke(int, QUObject*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x40D22338: QObject::activate_signal(QConnectionList*, QUObject*) 
(in /usr/lib/qt3/lib/libqt-mt.so.3.1.2) 
==4229==    Address 0x45E9DB94 is not stack'd, malloc'd or free'd 
==4229== 
==4229== Invalid read of size 4 
==4229==    at 0x40F78B0D: QString::QString(QString const&) (in 
/usr/lib/qt3/lib/libqt-mt.so.3.1.2) 
==4229==    by 0x409D1734: KURL::equals(KURL const&, bool) const (in 
/code/opt/kde3/lib/libkdecore.so.4.2.0) 
==4229==    by 0x409D16C4: KURL::cmp(KURL const&, bool) const (in 
/code/opt/kde3/lib/libkdecore.so.4.2.0) 
==4229==    by 0x405532DE: KDirLister::slotJobToBeKilled(KURL const&) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x4055413C: KDirLister::qt_invoke(int, QUObject*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x40D22338: QObject::activate_signal(QConnectionList*, QUObject*) 
(in /usr/lib/qt3/lib/libqt-mt.so.3.1.2) 
==4229==    by 0x405537B8: KDirLister::completed(KURL const&) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x4055093A: KDirListerCache::slotUpdateResult(KIO::Job*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x405547CE: KDirListerCache::qt_invoke(int, QUObject*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x40D22338: QObject::activate_signal(QConnectionList*, QUObject*) 
(in /usr/lib/qt3/lib/libqt-mt.so.3.1.2) 
==4229==    by 0x404BD995: KIO::Job::result(KIO::Job*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x404AAC01: KIO::Job::emitResult() (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x404ABF8A: KIO::SimpleJob::slotFinished() (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x404B2B8D: KIO::ListJob::slotFinished() (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x404BFDAF: KIO::ListJob::qt_invoke(int, QUObject*) (in 
/code/opt/kde3/lib/libkio.so.4.2.0) 
==4229==    by 0x40D22338: QObject::activate_signal(QConnectionList*, QUObject*) 
(in /usr/lib/qt3/lib/libqt-mt.so.3.1.2) 
==4229==    Address 0x4 is not stack'd, malloc'd or free'd 
==4229== Warning: client attempted to close Valgrind's logfile fd (2). 
==4229==    Use --logfile-fd=<number> to select an alternative logfile fd. 
KCrash: Application 'konqueror' crashing... 
 
 

http://bugs.kde.org/show_bug.cgi?id=51215#c5 has some more KDirLister  
nastiness... That one is KDirListerCache yanking KFileItem's from memory from  
under a preview job. 
 

*** Bug 58795 has been marked as a duplicate of this bug. ***

*** Bug 60286 has been marked as a duplicate of this bug. ***

*** Bug 62147 has been marked as a duplicate of this bug. ***

I'm actually unsure if the bug is fixed or not, but it definitly should be fixed for 3.2 

It's not fixed. I got the following crash with CVS from 2 days ago.

[New Thread 16384 (LWP 18371)]
0x4124c5c9 in waitpid () from /lib/libpthread.so.0
#0  0x4124c5c9 in waitpid () from /lib/libpthread.so.0
#1  0x407c2351 in KCrash::defaultCrashHandler(int) (sig=11) at kcrash.cpp:246
#2  0x4124ac45 in __pthread_sighandler () from /lib/libpthread.so.0
#3  <signal handler called>
#4  0x40261406 in KDirListerCache::killJob(KIO::ListJob*) (this=0x83395f0, 
    job=0x8365260) at kdirlister.cpp:1384
#5  0x4025c856 in KDirListerCache::stop(KDirLister*) (this=0x83395f0, 
    lister=0x8365260) at kdirlister.cpp:331
#6  0x40262cb2 in KDirLister::stop() (this=0x8365260) at kdirlister.cpp:1591
#7  0x425039e0 in KonqBaseListViewWidget::stop() (this=0x835e7d0)
    at konq_listviewwidget.cc:319
#8  0x424fc0f6 in KonqListView::doCloseURL() (this=0x8341a70)
    at konq_listview.cc:290
#9  0x4159f0f6 in KonqDirPart::closeURL() (this=0x8341a70)
    at konq_dirpart.cc:477
#10 0x4162ca6d in KonqView::stop() (this=0x8222d78) at konq_view.cc:853
#11 0x4165d1d9 in KonqMainWindow::abortLoading() (this=0x81091f0)
    at konq_mainwindow.cc:992
#12 0x4165a457 in KonqMainWindow::openURL(KonqView*, KURL const&, QString const&, KonqOpenURLRequest, bool) (this=0x81091f0, _view=0x82d3108, 
    _url=@0xbfffed50, _serviceType=@0xbfffed8c, req=
        {typedURL = {static null = {static null = <same as static member of an already seen type>, d = 0x8056de0, static shared_null = 0x8056de0}, d = 0x8056de0, static shared_null = 0x8056de0}, nameFilter = {static null = {static null = <same as static member of an already seen type>, d = 0x8056de0, static shared_null = 0x8056de0}, d = 0x8056de0, static shared_null = 0x8056de0}, followMode = false, newTab = false, newTabInFront = false, openAfterCurrentPage = false, forceAutoEmbed = false, args = {_vptr.URLArgs = 0x40064e78, docState = {<QValueList<QString>> = {sh = 0x82ad2f8}, <No data fields>}, reload = false, xOffset = 0, yOffset = 0, serviceType = {static null = {static null = <same as static member of an already seen type>, d = 0x8056de0, static shared_null = 0x8056de0}, d = 0x82a37e0, static shared_null = 0x8056de0}, postData = {<> = {<No data fields>}, <No data fields>}, frameName = {static null = {static null = <same as static member of an already seen type>, d = 0x8056de0, static shared_null = 0x8056de0}, d = 0x8056de0, static shared_null = 0x8056de0}, trustedSource = true, d = 0x0}}, 
    trustedSource=true) at konq_mainwindow.cc:514
#13 0x4165cb0c in KonqMainWindow::openURL(KonqView*, KURL const&, KParts::URLArgs const&) (this=0x81091f0, childView=0x82d3108, url=@0xbfffed50, 
    args=@0xbfffed78) at konq_mainwindow.cc:919
#14 0x4165c839 in KonqMainWindow::slotOpenURLRequest(KURL const&, KParts::URLArgs const&) (this=0x81091f0, url=@0xbfffed50, args=@0xbfffed78)
    at konq_mainwindow.cc:897
#15 0x41675c43 in KonqMainWindow::qt_invoke(int, QUObject*) (this=0x81091f0, 
    _id=81, _o=0xbfffece0) at konq_mainwindow.moc:543
#16 0x40ba38f3 in QObject::activate_signal(QConnectionList*, QUObject*) ()
   from /opt/qt3/lib/libqt-mt.so.3
#17 0x40051a31 in KParts::BrowserExtension::openURLRequestDelayed(KURL const&, KParts::URLArgs const&) (this=0x82f4e28, t0=@0xbfffed50, t1=@0xbfffed78)
    at browserextension.moc:289
#18 0x40050858 in KParts::BrowserExtension::slotEmitOpenURLRequestDelayed() (
    this=0x82f4e28) at browserextension.cpp:481
#19 0x40053059 in KParts::BrowserExtension::qt_invoke(int, QUObject*) (
    this=0x82f4e28, _id=4, _o=0xbfffee90) at browserextension.moc:554
#20 0x41f07e32 in KonqSidebarBrowserExtension::qt_invoke(int, QUObject*) (
    this=0x82f4e28, _id=4, _o=0xbfffee90) at konqsidebar.moc:114
#21 0x40ba38f3 in QObject::activate_signal(QConnectionList*, QUObject*) ()
   from /opt/qt3/lib/libqt-mt.so.3
#22 0x40e9ac17 in QSignal::signal(QVariant const&) ()
   from /opt/qt3/lib/libqt-mt.so.3
#23 0x40bbbd65 in QSignal::activate() () from /opt/qt3/lib/libqt-mt.so.3
#24 0x40bc2cbc in QSingleShotTimer::event(QEvent*) ()
   from /opt/qt3/lib/libqt-mt.so.3
#25 0x40b4aacd in QApplication::internalNotify(QObject*, QEvent*) ()
   from /opt/qt3/lib/libqt-mt.so.3
#26 0x40b4a179 in QApplication::notify(QObject*, QEvent*) ()
   from /opt/qt3/lib/libqt-mt.so.3
#27 0x407398fd in KApplication::notify(QObject*, QEvent*) (this=0xbffff4c0, 
    receiver=0x8132f00, event=0xbffff180) at kapplication.cpp:503
#28 0x40b3a50c in QEventLoop::activateTimers() ()
   from /opt/qt3/lib/libqt-mt.so.3
#29 0x40afa018 in QEventLoop::processEvents(unsigned) ()
   from /opt/qt3/lib/libqt-mt.so.3
#30 0x40b5cedb in QEventLoop::enterLoop() () from /opt/qt3/lib/libqt-mt.so.3
#31 0x40b5cd84 in QEventLoop::exec() () from /opt/qt3/lib/libqt-mt.so.3
#32 0x40b4ad40 in QApplication::exec() () from /opt/qt3/lib/libqt-mt.so.3
#33 0x4161b72d in kdemain (argc=2, argv=0x8063280) at konq_main.cc:184
#34 0x408cd935 in kdeinitmain (argc=2, argv=0x8063280) at konqueror_dummy.cc:2
#35 0x0804e1bc in launch (argc=2, _name=0x806320c "konqueror", 
    args=0x806321f "\001", cwd=0x0, envc=1, envs=0x8063230 "", 
    reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8063234 "eiwrk039;1074374770;653292;1273")
    at kinit.cpp:604
#36 0x0804f4af in handle_launcher_request (sock=8) at kinit.cpp:1167
#37 0x0804fb98 in handle_requests (waitForPid=0) at kinit.cpp:1360
#38 0x08050ff9 in main (argc=3, argv=0xbffffae4, envp=0xbffffaf4)
    at kinit.cpp:1797
#39 0x4139bd06 in __libc_start_main () from /lib/libc.so.6

half way reproducable? If so: get into valgrind - seriously

I'm trying, and I think I can somehow reproduce it. I have in the sidebar LAN browsing only one machine, which shows FISH and SMB. I double click on FISH and immediately I double-click on SMB.

I run in gdb, and see that the crash happens in  KDirListerCache::killJob() because job->kill() has a NULL pointer as job. Interesting is, that the line above: job->disconnect(), job is also derefd, but the crash happens on job->kill(). So this means, that the job pointer is set to 0 somewhere in the disconnect() function.
Is a fix like this
if ( job ) job->kill();
too trivial ?

I found to reproduce it in a simpler way:
Just double click multiple times in a fast sequence directly on the "LAN Browser" root node.

And now I ran konqueror with valgrind (after I have already inserted the if (job ) ... and recompiled kdelibs):

<snip>
konqueror: WARNING: KGenericFactory: instance requested but no instance name passed to the constructor!
ASSERT: "!urlsCurrentlyHeld[jobUrlStr]" in kdirlister.cpp (941)
ASSERT: "!urlsCurrentlyHeld[jobUrlStr]" in kdirlister.cpp (941)
ASSERT: "!urlsCurrentlyHeld[jobUrlStr]" in kdirlister.cpp (941)
ASSERT: "!urlsCurrentlyHeld[jobUrlStr]" in kdirlister.cpp (941)
==21899== 
==21899== Use of uninitialised value of size 4
==21899==    at 0x40F8F059: QTextFormat::QTextFormat(QFont const&, QColor const&, QTextFormatCollection*) (in /opt/qt3/lib/libqt-mt.so.3.2.3)
==21899==    by 0x40F774BB: QTextFormatCollection::QTextFormatCollection() (in /opt/qt3/lib/libqt-mt.so.3.2.3)
==21899==    by 0x40F5A885: QTextDocument::QTextDocument(QTextDocument*) (in /opt/qt3/lib/libqt-mt.so.3.2.3)
==21899==    by 0x40F910CA: QSimpleRichText::QSimpleRichText(QString const&, QFont const&, QString const&, QStyleSheet const*) (in /opt/qt3/lib/libqt-mt.so.3.2.3)
==21899== 
==21899== Use of uninitialised value of size 4
==21899==    at 0x40F8F059: QTextFormat::QTextFormat(QFont const&, QColor const&, QTextFormatCollection*) (in /opt/qt3/lib/libqt-mt.so.3.2.3)
==21899==    by 0x40F774BB: QTextFormatCollection::QTextFormatCollection() (in /opt/qt3/lib/libqt-mt.so.3.2.3)
==21899==    by 0x40F5A885: QTextDocument::QTextDocument(QTextDocument*) (in /opt/qt3/lib/libqt-mt.so.3.2.3)
==21899==    by 0x410578BB: QTextEdit::QTextEdit(QWidget*, char const*) (in /opt/qt3/lib/libqt-mt.so.3.2.3)
ASSERT: "!urlsCurrentlyHeld[jobUrlStr]" in kdirlister.cpp (941)
ASSERT: "!urlsCurrentlyHeld[jobUrlStr]" in kdirlister.cpp (941)
QObject::disconnect: Unexpected null parameter
ASSERT: "!urlsCurrentlyHeld[jobUrlStr]" in kdirlister.cpp (941)
ASSERT: "holders" in kdirlister.cpp (436)
==21899== 
==21899== Invalid read of size 4
==21899==    at 0x4119BB60: QGList::findRef(void*, bool) (in /opt/qt3/lib/libqt-mt.so.3.2.3)
==21899==    by 0x4119B7B3: QGList::removeRef(void*) (in /opt/qt3/lib/libqt-mt.so.3.2.3)
==21899==    by 0x405D8198: QPtrList<KDirLister>::removeRef(KDirLister const*) (qptrlist.h:86)
==21899==    by 0x405CDF4D: KDirListerCache::forgetDirs(KDirLister*, KURL const&, bool) (kdirlister.cpp:437)
==21899==  Address 0x8 is not stack'd, malloc'd or free'd
==21899== Warning: invalid file descriptor 821 in syscall close()
==21899==    Use --logfile-fd=<number> to select an alternative logfile fd.
==21899== Warning: invalid file descriptor 822 in syscall close()
==21899== Warning: invalid file descriptor 823 in syscall close()
<snip>

that are quite some ASSERTs ;(

Created attachment 4225 [details]
reverting a commit

can you try if applying this patch makes any difference?

its just a random shot, but this sounds too much like I broke
something here.

No matter how hard I try I can't reproduce this. Using Debian Sid packages of KDE3.1.5.

Subject: Re:  konqi crash when using lan:// IO slave

On Sunday 18 January 2004 10:03, Dirk Mueller wrote:
> can you try if applying this patch makes any difference?
>
> its just a random shot, but this sounds too much like I broke
> something here.

Sorry, did not solve the problem:

konqueror: WARNING: KGenericFactory: instance requested but no instance name 
passed to the constructor!
ASSERT: "!urlsCurrentlyHeld[jobUrlStr]" in kdirlister.cpp (938)
ASSERT: "item" in kdirlister.cpp (438)

#3  <signal handler called>
#4  0x403c4131 in KDirListerCache::forgetDirs(KDirLister*, KURL const&, bool) 
(
    this=0x8304148, lister=0x832eb10, url=@0x0, notify=64)
    at kdirlister.cpp:470
#5  0x403c3dcf in KDirListerCache::forgetDirs(KDirLister*) (this=0x8304148, 
    lister=0x832eb10) at kdirlister.cpp:422
#6  0x403c2b94 in KDirListerCache::listDir(KDirLister*, KURL const&, bool, 
bool) (this=0x8304148, lister=0x832eb10, _u=@0xbfffed60, _keep=false, 
_reload=true)
    at kdirlister.cpp:108
#7  0x403c9c70 in KDirLister::openURL(KURL const&, bool, bool) (
    this=0x832eb10, _url=@0xbfffed60, _keep=false, _reload=true)
    at kdirlister.cpp:1580
#8  0x41f861b2 in KonqBaseListViewWidget::openURL(KURL const&) (
    this=0x8328230, url=@0xbfffed60) at konq_listviewwidget.cc:896
#9  0x41f7c09c in KonqListView::doOpenURL(KURL const&) (this=0x8307fd8, 
    url=@0xbfffed60) at konq_listview.cc:285
#10 0x4015c20a in KonqDirPart::openURL(KURL const&) (this=0x8307fd8, 
    url=@0xbfffed60) at konq_dirpart.cc:493
#11 0x40080140 in KonqView::openURL(KURL const&, QString const&, QString 
const&) (this=0x8217078, url=@0xbfffed60, locationBarURL=@0xbfffed40, 
    nameFilter=@0xbfffee54) at konq_view.cc:203
<snip>

*** Bug 51590 has been marked as a duplicate of this bug. ***

Oh, I'm sorry for not closing this one earlier, I must have overlooked it in 
my list. I've fixed it, see #67710 as well, if you want.

Cheers,
  Michael