Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-28-generic i686
Distribution: Ubuntu 10.10

-- Information about the crash:
- Unusual behavior I noticed:
I configure the microblogging application with my username and password and everything is ok. After I logout and log in  again the plasma desktop doesn't start and crashes with a segmentation fault. If I don't configure de microblogging widget, it doesn't happen.

The crash can be reproduced every time.

-- Backtrace:
Application: Shell da área de trabalho do Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7876ad0 (LWP 5613))]

Thread 3 (Thread 0xb424db70 (LWP 5615)):
#0  0x00fd0416 in __kernel_vsyscall ()
#1  0x003e8df6 in poll () from /lib/libc.so.6
#2  0x03e12a1b in g_poll () from /lib/libglib-2.0.so.0
#3  0x03e0543c in ?? () from /lib/libglib-2.0.so.0
#4  0x03e05848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0455e59f in QEventDispatcherGlib::processEvents (this=0x9c07a08, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#6  0x0452e609 in QEventLoop::processEvents (this=0xb424d280, flags=) at kernel/qeventloop.cpp:149
#7  0x0452ea8a in QEventLoop::exec (this=0xb424d280, flags=...) at kernel/qeventloop.cpp:201
#8  0x0442ab7e in QThread::exec (this=0x9492c00) at thread/qthread.cpp:490
#9  0x0450d35b in QInotifyFileSystemWatcherEngine::run (this=0x9492c00) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x0442ddf9 in QThreadPrivate::start (arg=0x9492c00) at thread/qthread_unix.cpp:266
#11 0x06ffdcc9 in start_thread () from /lib/libpthread.so.0
#12 0x003f769e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xad167b70 (LWP 5617)):
#0  0x00aece36 in clock_gettime () from /lib/librt.so.1
#1  0x0448950b in do_gettime () at tools/qelapsedtimer_unix.cpp:105
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:119
#3  0x045606e5 in QTimerInfoList::updateCurrentTime (this=0x9c053dc) at kernel/qeventdispatcher_unix.cpp:339
#4  0x0456072a in QTimerInfoList::timerWait (this=0x9c053dc, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x0455e7a8 in timerSourcePrepareHelper (src=<value optimized out>, timeout=0xad1670ac) at kernel/qeventdispatcher_glib.cpp:136
#6  0x0455e83d in timerSourcePrepare (source=0x0, timeout=0xaf0ff4) at kernel/qeventdispatcher_glib.cpp:169
#7  0x03e04e6a in g_main_context_prepare () from /lib/libglib-2.0.so.0
#8  0x03e05279 in ?? () from /lib/libglib-2.0.so.0
#9  0x03e05848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#10 0x0455e59f in QEventDispatcherGlib::processEvents (this=0x9ccf658, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#11 0x0452e609 in QEventLoop::processEvents (this=0xad167280, flags=) at kernel/qeventloop.cpp:149
#12 0x0452ea8a in QEventLoop::exec (this=0xad167280, flags=...) at kernel/qeventloop.cpp:201
#13 0x0442ab7e in QThread::exec (this=0x9be8748) at thread/qthread.cpp:490
#14 0x0450d35b in QInotifyFileSystemWatcherEngine::run (this=0x9be8748) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x0442ddf9 in QThreadPrivate::start (arg=0x9be8748) at thread/qthread_unix.cpp:266
#16 0x06ffdcc9 in start_thread () from /lib/libpthread.so.0
#17 0x003f769e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb7876ad0 (LWP 5613)):
[KCrash Handler]
#7  q_func (this=0x2174, newVisible=false, explicitly=true, update=true) at graphicsview/qgraphicsitem_p.h:160
#8  QGraphicsItemPrivate::setVisibleHelper (this=0x2174, newVisible=false, explicitly=true, update=true) at graphicsview/qgraphicsitem.cpp:2235
#9  0x01b9d308 in QGraphicsItem::setVisible (this=0x703468, visible=<value optimized out>) at graphicsview/qgraphicsitem.cpp:2411
#10 0x05366bf1 in hide (this=0x9803a60) at /usr/include/qt4/QtGui/qgraphicsitem.h:221
#11 MicroBlog::downloadHistory (this=0x9803a60) at ../../../applets/microblog/microblog.cpp:839
#12 0x053692ec in MicroBlog::configChanged (this=0x9803a60) at ../../../applets/microblog/microblog.cpp:368
#13 0x053639ab in MicroBlog::init (this=0x9803a60) at ../../../applets/microblog/microblog.cpp:88
#14 0x0054bd3c in Plasma::ContainmentPrivate::initApplets (this=0x97aafc8) at ../../plasma/containment.cpp:463
#15 0x00561fff in Plasma::CoronaPrivate::importLayout (this=0x94cd120, conf=..., mergeConfig=false) at ../../plasma/corona.cpp:566
#16 0x00562bec in Plasma::Corona::loadLayout (this=0x942ef00, configName=...) at ../../plasma/corona.cpp:494
#17 0x005637ee in Plasma::Corona::initializeLayout (this=0x942ef00, configName=...) at ../../plasma/corona.cpp:397
#18 0x00a6c52a in PlasmaApp::corona (this=0x941f938) at ../../../../plasma/desktop/shell/plasmaapp.cpp:797
#19 0x00a6c90b in PlasmaApp::setupDesktop (this=0x941f938) at ../../../../plasma/desktop/shell/plasmaapp.cpp:299
#20 0x00a6f677 in PlasmaApp::qt_metacall (this=0x941f938, _c=QMetaObject::InvokeMetaMethod, _id=18, _a=0x94ba288) at ./plasmaapp.moc:155
#21 0x045358ca in QMetaObject::metacall (object=0x941f938, cl=87487025, idx=45, argv=0x94ba288) at kernel/qmetaobject.cpp:237
#22 0x04540df6 in QMetaCallEvent::placeMetaCall (this=0x94b7e40, object=0x941f938) at kernel/qobject.cpp:534
#23 0x045426a2 in QObject::event (this=0x941f938, e=0x0) at kernel/qobject.cpp:1219
#24 0x0452f9db in QCoreApplication::event (this=0x941f938, e=0x94b7e40) at kernel/qcoreapplication.cpp:1561
#25 0x014f94d4 in QApplication::event (this=0x941f938, e=0x94b7e40) at kernel/qapplication.cpp:2439
#26 0x014f5fdc in QApplicationPrivate::notify_helper (this=0x942ad50, receiver=0x941f938, e=0x94b7e40) at kernel/qapplication.cpp:4396
#27 0x014fc04e in QApplication::notify (this=0x941f938, receiver=0x941f938, e=0x94b7e40) at kernel/qapplication.cpp:3798
#28 0x011db82a in KApplication::notify (this=0x941f938, receiver=0x941f938, event=0x94b7e40) at ../../kdeui/kernel/kapplication.cpp:311
#29 0x0452fb3b in QCoreApplication::notifyInternal (this=0x941f938, receiver=0x941f938, event=0x94b7e40) at kernel/qcoreapplication.cpp:732
#30 0x04532d8b in sendEvent (receiver=0x0, event_type=0, data=0x93f3300) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x93f3300) at kernel/qcoreapplication.cpp:1373
#32 0x04532f4d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1266
#33 0x0455ea74 in sendPostedEvents (s=0x942d0f0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#34 postEventSourceDispatch (s=0x942d0f0) at kernel/qeventdispatcher_glib.cpp:277
#35 0x03e01855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#36 0x03e05668 in ?? () from /lib/libglib-2.0.so.0
#37 0x03e05848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#38 0x0455e565 in QEventDispatcherGlib::processEvents (this=0x93f2fc0, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#39 0x015b7be5 in QGuiEventDispatcherGlib::processEvents (this=0x93f2fc0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#40 0x0452e609 in QEventLoop::processEvents (this=0xbfd8d3c4, flags=) at kernel/qeventloop.cpp:149
#41 0x0452ea8a in QEventLoop::exec (this=0xbfd8d3c4, flags=...) at kernel/qeventloop.cpp:201
#42 0x0453300f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#43 0x014f4e07 in QApplication::exec () at kernel/qapplication.cpp:3672
#44 0x00a4e1e7 in kdemain (argc=1, argv=0xbfd8d5d4) at ../../../../plasma/desktop/shell/main.cpp:118
#45 0x080485bb in main (argc=1, argv=0xbfd8d5d4) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 270327.

Possible duplicates by query: bug 270651, bug 270495, bug 270452, bug 270327, bug 248399.

Reported using DrKonqi