Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-29-generic-pae i686
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
can't provide more info

The crash can be reproduced every time.

-- Backtrace:
Application: Κέλυφος επιφάνειας εργασίας (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xafe2ca40 (LWP 2027))]

Thread 4 (Thread 0xa7f96b40 (LWP 2028)):
#0  0xb2b8e125 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2b8e201 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb64338e7 in QEventDispatcherGlib::processEvents (this=0xa7600480, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#3  0xb63ff50d in QEventLoop::processEvents (this=0xa7f96190, flags=...) at kernel/qeventloop.cpp:149
#4  0xb63ff7a9 in QEventLoop::exec (this=0xa7f96190, flags=...) at kernel/qeventloop.cpp:204
#5  0xb62e894c in QThread::exec (this=0x97eade8) at thread/qthread.cpp:501
#6  0xb63dcb5d in QInotifyFileSystemWatcherEngine::run (this=0x97eade8) at io/qfilesystemwatcher_inotify.cpp:248
#7  0xb62ebde0 in QThreadPrivate::start (arg=0x97eade8) at thread/qthread_unix.cpp:298
#8  0xb22d3a11 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#9  0x5c8b0824 in ?? ()
#10 0xbab80424 in ?? ()
#11 0x65000000 in ?? ()
#12 0x001015ff in ?? ()
#13 0xd3890000 in ?? ()
#14 0xfff0013d in ?? ()
#15 0xc30173ff in ?? ()
#16 0x0f8122e8 in ?? ()
#17 0x9fc18100 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 3 (Thread 0xa6eddb40 (LWP 2029)):
#0  0xb2ca1c64 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb7625634 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2bcd410 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2b8d3a7 in g_main_context_release () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2b8e058 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb2b8e201 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb64338e7 in QEventDispatcherGlib::processEvents (this=0xa6500480, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0xb63ff50d in QEventLoop::processEvents (this=0xa6edd190, flags=...) at kernel/qeventloop.cpp:149
#8  0xb63ff7a9 in QEventLoop::exec (this=0xa6edd190, flags=...) at kernel/qeventloop.cpp:204
#9  0xb62e894c in QThread::exec (this=0x9b2f548) at thread/qthread.cpp:501
#10 0xb63dcb5d in QInotifyFileSystemWatcherEngine::run (this=0x9b2f548) at io/qfilesystemwatcher_inotify.cpp:248
#11 0xb62ebde0 in QThreadPrivate::start (arg=0x9b2f548) at thread/qthread_unix.cpp:298
#12 0xb22d3a11 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#13 0x5c8b0824 in ?? ()
#14 0xbab80424 in ?? ()
#15 0x65000000 in ?? ()
#16 0x001015ff in ?? ()
#17 0xd3890000 in ?? ()
#18 0xfff0013d in ?? ()
#19 0xc30173ff in ?? ()
#20 0x0f8122e8 in ?? ()
#21 0x9fc18100 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 2 (Thread 0xa53b8b40 (LWP 2032)):
#0  0xb7768424 in __kernel_vsyscall ()
#1  0xb2ca296b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb76253dc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb3c61029 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb3c6106f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb22d3a11 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x5c8b0824 in ?? ()
#7  0xbab80424 in ?? ()
#8  0x65000000 in ?? ()
#9  0x001015ff in ?? ()
#10 0xd3890000 in ?? ()
#11 0xfff0013d in ?? ()
#12 0xc30173ff in ?? ()
#13 0x0f8122e8 in ?? ()
#14 0x9fc18100 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0xafe2ca40 (LWP 2027)):
[KCrash Handler]
#7  0xb5b1a03b in QRasterWindowSurface::~QRasterWindowSurface (this=0xa03dfc8, __in_chrg=<optimized out>) at painting/qwindowsurface_raster.cpp:117
#8  0xb5b1a0d2 in QRasterWindowSurface::~QRasterWindowSurface (this=0xa03dfc8, __in_chrg=<optimized out>) at painting/qwindowsurface_raster.cpp:121
#9  0xb5b35424 in QWidgetBackingStore::~QWidgetBackingStore (this=0xa03f380, __in_chrg=<optimized out>) at painting/qbackingstore.cpp:909
#10 0xb593dcec in QWidgetBackingStoreTracker::destroy (this=0xa03e620) at kernel/qwidget.cpp:217
#11 0xb593de48 in QWidgetPrivate::deleteExtra (this=0x96fb818) at kernel/qwidget.cpp:1830
#12 0xb593e05c in QWidgetPrivate::~QWidgetPrivate (this=0x96fb818, __in_chrg=<optimized out>) at kernel/qwidget.cpp:357
#13 0xb593e372 in QWidgetPrivate::~QWidgetPrivate (this=0x96fb818, __in_chrg=<optimized out>) at kernel/qwidget.cpp:362
#14 0xb641b4bb in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:62
#15 ~QScopedPointer (this=0x966ffdc, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:100
#16 QObject::~QObject (this=0x966ffd8, __in_chrg=<optimized out>) at kernel/qobject.cpp:817
#17 0xb594022d in QWidget::~QWidget (this=0x966ffd8, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1551
#18 0xb5940482 in QWidget::~QWidget (this=0x966ffd8, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1700
#19 0xb5f5c948 in QGlobalStaticDeleter<QWidget>::~QGlobalStaticDeleter (this=0xb62830f0, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qglobal.h:1923
#20 0xb755ff61 in ?? () from /lib/i386-linux-gnu/libc.so.6
#21 0xb755ffed in exit () from /lib/i386-linux-gnu/libc.so.6
#22 0xb75464db in __libc_start_main () from /lib/i386-linux-gnu/libc.so.6
#23 0x08048531 in _start ()

This bug may be a duplicate of or related to bug 305475.

Possible duplicates by query: bug 305687, bug 305475, bug 297684, bug 295018, bug 294270.

Reported using DrKonqi