Application: konqueror (4.4.1 (KDE 4.4.1))
KDE Platform Version: 4.4.1 (KDE 4.4.1) (Compiled from sources)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-4-amd64 x86_64
Distribution: Debian GNU/Linux 5.0.4 (lenny)

-- Information about the crash:
This was happening when switching to webkit in the upload image flash interface interface version of the Nextgen Gallery Wordpress plugin. Note that I wanted to do this because it's not working with KHTML so it's an other bug (but there's many known bug with Flash nspluginviewer used with KHTML).

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f5c0ca0c750 (LWP 7824))]

Thread 2 (Thread 0x7f5be8dbb910 (LWP 16863)):
#0  0x00007f5c0a2dbf89 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f5bfc19c4e6 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7f5bfd160220) at ../JavaScriptCore/wtf/FastMalloc.cpp:2299
#2  0x00007f5bfc19c529 in WTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f5bfd16e2ec) at ../JavaScriptCore/wtf/FastMalloc.cpp:1433
#3  0x00007f5c0a2d773a in start_thread () from /lib/libpthread.so.0
#4  0x00007f5c0896669d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f5c0ca0c750 (LWP 7824)):
[KCrash Handler]
#5  WTF::RefCountedBase::ref (c=0x7f5bfcb1d8c5 "") at ../JavaScriptCore/wtf/RefCounted.h:37
#6  refIfNotNull<WebCore::StringImpl> (c=0x7f5bfcb1d8c5 "") at ../JavaScriptCore/wtf/PassRefPtr.h:52
#7  PassRefPtr (c=0x7f5bfcb1d8c5 "") at ../JavaScriptCore/wtf/PassRefPtr.h:58
#8  WebCore::AtomicString::add (c=0x7f5bfcb1d8c5 "") at platform/text/AtomicString.cpp:92
#9  0x00007f5bfc4da444 in AtomicString () at platform/text/AtomicString.h:36
#10 WebCore::AtomicString::init () at platform/text/AtomicString.cpp:315
#11 0x00007f5bfc4d08be in Settings (this=0x688f400, page=<value optimized out>) at page/Settings.cpp:124
#12 0x00007f5bfc4c79c4 in Page (this=0x7f5be31d3ea0, chromeClient=0x4281e60, contextMenuClient=0x608d4b0, editorClient=0x608cab0, dragClient=0x608d030, inspectorClient=<value optimized out>, 
    pluginHalterClient=0x0) at page/Page.cpp:139
#13 0x00007f5bfc650e35 in QWebPagePrivate (this=0x688eed0, qq=<value optimized out>) at ../WebKit/qt/Api/qwebpage.cpp:383
#14 0x00007f5bfc657864 in QWebPage (this=0x51ff1e0, parent=0x5204c70) at ../WebKit/qt/Api/qwebpage.cpp:1692
#15 0x00007f5bee259a82 in KWebPage (this=0x51ff1e0, parent=0x5204c70, flags=...) at /share/src/kde/KDE/kdelibs/kdewebkit/kwebpage.cpp:65
#16 0x00007f5bee498cb4 in WebPage (this=0x51ff1e0, part=0x6d413c0, parent=0x5204c70) at /share/src/kde/extragear/base/kwebkitpart/src/webpage.cpp:189
#17 0x00007f5bee492d49 in WebView (this=0x5204c70, wpart=0x6d413c0, parent=0x4281e30) at /share/src/kde/extragear/base/kwebkitpart/src/webview.cpp:80
#18 0x00007f5bee48676e in KWebKitPartPrivate::init (this=0x2ff5180, mainWidget=0x4281e30) at /share/src/kde/extragear/base/kwebkitpart/src/kwebkitpart_p.cpp:162
#19 0x00007f5bee48345c in KWebKitPart (this=0x6d413c0, parentWidget=0x4295cd0, parent=0x0, __in_chrg=<value optimized out>, __vtt_parm=<value optimized out>)
    at /share/src/kde/extragear/base/kwebkitpart/src/kwebkitpart.cpp:93
#20 0x00007f5be1ffc90c in KWebKitFactory::createPartObject (this=0x6d6ee80, parentWidget=0x4295cd0, parent=0x0, className=0x7f5c0c5c5c29 "Browser/View", args=...)
    at /share/src/kde/extragear/base/kwebkitpart/src/kwebkitpartfactory.cpp:43
#21 0x00007f5c0c575674 in KPluginFactory::create (this=0x6d6ee80, iface=0x7f5c0c13a840 "KParts::ReadOnlyPart", parentWidget=0x4295cd0, parent=0x0, args=..., keyword=...)
    at /share/src/kde/KDE/kdelibs/kdecore/util/kpluginfactory.cpp:171
#22 0x00007f5bf67045f0 in KPluginFactory::create<KParts::ReadOnlyPart> (this=0x6d6ee80, parentWidget=0x4295cd0, parent=0x0, keyword=..., args=...) at /usr/include/kpluginfactory.h:515
#23 0x00007f5bf67014ee in KonqViewFactory::create (this=0x7fff56798c70, parentWidget=0x4295cd0, parent=0x0) at /share/src/kde/KDE/kdebase/apps/konqueror/src/konqfactory.cpp:71
#24 0x00007f5bf66e9656 in KonqFrame::attach (this=0x4295cd0, viewFactory=...) at /share/src/kde/KDE/kdebase/apps/konqueror/src/konqframe.cpp:143
#25 0x00007f5bf66ce487 in KonqView::switchView (this=0x5205b60, viewFactory=...) at /share/src/kde/KDE/kdebase/apps/konqueror/src/konqview.cpp:251
#26 0x00007f5bf66ceff8 in KonqView::changePart (this=0x5205b60, mimeType=..., serviceName=..., forceAutoEmbed=true) at /share/src/kde/KDE/kdebase/apps/konqueror/src/konqview.cpp:379
#27 0x00007f5bf672c057 in KonqMainWindow::slotOpenEmbedded (this=0x2437d20, service=...) at /share/src/kde/KDE/kdebase/apps/konqueror/src/konqmainwindow.cpp:4761
#28 0x00007f5bf6733d2c in KonqMainWindow::qt_metacall (this=0x2437d20, _c=QMetaObject::InvokeMetaMethod, _id=88, _a=0x60718c0)
    at /share/src/build/kde/KDE/kdebase/apps/konqueror/src/konqmainwindow.moc:427
#29 0x00007f5c0a67aa29 in QObject::event (this=0x2437d20, e=0x667d9d0) at kernel/qobject.cpp:1248
#30 0x00007f5c095e823f in QWidget::event (this=0x2437d20, event=0x667d9d0) at kernel/qwidget.cpp:8455
#31 0x00007f5c099aa05b in QMainWindow::event (this=0x2437d20, event=0x667d9d0) at widgets/qmainwindow.cpp:1433
#32 0x00007f5c0af57cb0 in KMainWindow::event (this=0x2437d20, ev=0x667d9d0) at /share/src/kde/KDE/kdelibs/kdeui/widgets/kmainwindow.cpp:1103
#33 0x00007f5c0af9e91c in KXmlGuiWindow::event (this=0x2437d20, ev=0x667d9d0) at /share/src/kde/KDE/kdelibs/kdeui/xmlgui/kxmlguiwindow.cpp:131
#34 0x00007f5bf6731f12 in KonqMainWindow::event (this=0x2437d20, e=0x667d9d0) at /share/src/kde/KDE/kdebase/apps/konqueror/src/konqmainwindow.cpp:5644
#35 0x00007f5c095928fc in QApplicationPrivate::notify_helper (this=0x2278f70, receiver=0x2437d20, e=0x667d9d0) at kernel/qapplication.cpp:4300
#36 0x00007f5c09598ddb in QApplication::notify (this=0x7fff5679a240, receiver=0x2437d20, e=0x667d9d0) at kernel/qapplication.cpp:4183
#37 0x00007f5c0ae531fb in KApplication::notify (this=0x7fff5679a240, receiver=0x2437d20, event=0x667d9d0) at /share/src/kde/KDE/kdelibs/kdeui/kernel/kapplication.cpp:302
#38 0x00007f5c0a66addc in QCoreApplication::notifyInternal (this=0x7fff5679a240, receiver=0x2437d20, event=0x667d9d0) at kernel/qcoreapplication.cpp:704
#39 0x00007f5c0a66d557 in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x21d8520) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#40 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x21d8520) at kernel/qcoreapplication.cpp:1345
#41 0x00007f5c0a6946f3 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#42 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#43 0x00007f5c0508890e in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#44 0x00007f5c0508c2c8 in ?? () from /lib/libglib-2.0.so.0
#45 0x00007f5c0508c3f0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#46 0x00007f5c0a694233 in QEventDispatcherGlib::processEvents (this=0x21d9980, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#47 0x00007f5c0964232e in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#48 0x00007f5c0a669702 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#49 0x00007f5c0a669adc in QEventLoop::exec (this=0x7fff56799fb0, flags=) at kernel/qeventloop.cpp:201
#50 0x00007f5c0a66d81b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#51 0x00007f5bf6767142 in kdemain (argc=2, argv=0x2243f70) at /share/src/kde/KDE/kdebase/apps/konqueror/src/konqmain.cpp:257
#52 0x0000000000406be9 in launch (argc=2, _name=0x222b558 "/usr/bin/konqueror", args=0x222b574 "", cwd=0x0, envc=0, envs=0x222b57c "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x222b584 "debian-ltop;1269450882;718575;7537_TIME1336668") at /share/src/kde/KDE/kdelibs/kinit/kinit.cpp:717
#53 0x0000000000407d4d in handle_launcher_request (sock=9, who=0x40c37c "launcher") at /share/src/kde/KDE/kdelibs/kinit/kinit.cpp:1209
#54 0x000000000040851f in handle_requests (waitForPid=0) at /share/src/kde/KDE/kdelibs/kinit/kinit.cpp:1402
#55 0x0000000000409ab5 in main (argc=4, argv=0x7fff5679b6c8, envp=0x7fff5679b6f0) at /share/src/kde/KDE/kdelibs/kinit/kinit.cpp:1845

Reported using DrKonqi