Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic-pae i686
Distribution: Ubuntu 11.10

-- Information about the crash:
Launching Thunderbird using Alt+F2 Plasma suddenly crashed.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Shell del desktop di Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb057c720 (LWP 15890))]

Thread 5 (Thread 0xae733b70 (LWP 15891)):
#0  0xb2ef7bab in g_main_context_query () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2ef8664 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2ef8c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb6470b37 in QEventDispatcherGlib::processEvents (this=0x932a9f0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0xb64411dd in QEventLoop::processEvents (this=0xae7331f0, flags=...) at kernel/qeventloop.cpp:149
#5  0xb6441421 in QEventLoop::exec (this=0xae7331f0, flags=...) at kernel/qeventloop.cpp:201
#6  0xb634490b in QThread::exec (this=0x937f1d8) at thread/qthread.cpp:498
#7  0xb6421e2d in QInotifyFileSystemWatcherEngine::run (this=0x937f1d8) at io/qfilesystemwatcher_inotify.cpp:248
#8  0xb63477b3 in QThreadPrivate::start (arg=0x937f1d8) at thread/qthread_unix.cpp:331
#9  0xb26629cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0xb76250ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xa6edeb70 (LWP 15893)):
#0  0xb3015d44 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb7632f54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2ef787f in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2ef8637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2ef8c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb6470b37 in QEventDispatcherGlib::processEvents (this=0x962d290, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0xb64411dd in QEventLoop::processEvents (this=0xa6ede1f0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb6441421 in QEventLoop::exec (this=0xa6ede1f0, flags=...) at kernel/qeventloop.cpp:201
#8  0xb634490b in QThread::exec (this=0x962f920) at thread/qthread.cpp:498
#9  0xb6421e2d in QInotifyFileSystemWatcherEngine::run (this=0x962f920) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb63477b3 in QThreadPrivate::start (arg=0x962f920) at thread/qthread_unix.cpp:331
#11 0xb26629cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#12 0xb76250ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xa5cb3b70 (LWP 15900)):
#0  0xb3015d44 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb7632f54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2ef7f1f in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2ef88f0 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2ef8f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xa6593cea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0xb2f1f5f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb26629cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#8  0xb76250ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xa3999b70 (LWP 15933)):
#0  0xb776b424 in __kernel_vsyscall ()
#1  0xb3016a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb7632cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb3ec29a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb3ec29ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb26629cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0xb76250ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb057c720 (LWP 15890)):
[KCrash Handler]
#7  isNull (this=0x10) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x10) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=0x9fc6740) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0xaee1b662 in WindowTaskItem::publishIconGeometry (this=0x9c84590) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#11 0xaee2c688 in AbstractTaskItem::timerEvent (this=0x9c84590, event=0xbfb94bdc) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#12 0xb645a994 in QObject::event (this=0x9c84590, e=0xbfb94bdc) at kernel/qobject.cpp:1181
#13 0xb602cbd4 in QGraphicsWidget::event (this=0x9c84590, event=0xbfb94bdc) at graphicsview/qgraphicswidget.cpp:1455
#14 0xb596dd54 in notify_helper (e=0xbfb94bdc, receiver=0x9c84590, this=0x8b3c1f0) at kernel/qapplication.cpp:4486
#15 QApplicationPrivate::notify_helper (this=0x8b3c1f0, receiver=0x9c84590, e=0xbfb94bdc) at kernel/qapplication.cpp:4458
#16 0xb5973103 in QApplication::notify (this=0xbfb94bdc, receiver=0x9c84590, e=0xbfb94bdc) at kernel/qapplication.cpp:3886
#17 0xb6aa7681 in KApplication::notify (this=0x8b2a868, receiver=0x9c84590, event=0xbfb94bdc) at ../../kdeui/kernel/kapplication.cpp:311
#18 0xb644219e in QCoreApplication::notifyInternal (this=0x8b2a868, receiver=0x9c84590, event=0xbfb94bdc) at kernel/qcoreapplication.cpp:787
#19 0xb6472c10 in sendEvent (event=0xbfb94bdc, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x8b38abc) at kernel/qeventdispatcher_unix.cpp:603
#21 0xb6470155 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#22 idleTimerSourceDispatch (source=0x8b38af0) at kernel/qeventdispatcher_glib.cpp:231
#23 0xb2ef825f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0xb2ef8990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0xb2ef8c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0xb6470ada in QEventDispatcherGlib::processEvents (this=0x8a9f230, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#27 0xb5a25e3a in QGuiEventDispatcherGlib::processEvents (this=0x8a9f230, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0xb64411dd in QEventLoop::processEvents (this=0xbfb94e54, flags=...) at kernel/qeventloop.cpp:149
#29 0xb6441421 in QEventLoop::exec (this=0xbfb94e54, flags=...) at kernel/qeventloop.cpp:201
#30 0xb644619d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#31 0xb596b8f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#32 0xb772018b in kdemain (argc=1, argv=0xbfb95054) at ../../../../plasma/desktop/shell/main.cpp:120
#33 0x0804850b in main (argc=1, argv=0xbfb95054) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 272495.

Possible duplicates by query: bug 289508, bug 289482, bug 289435, bug 289432, bug 289392.

Reported using DrKonqi