Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.2 (4.8.2)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-24-generic-pae i686
Distribution: Ubuntu 12.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Starting Ubuntu 12.04 after a dist-upgrade from 11.10, happened again after a second reboot, also related now kmix crashes intermitently.

- Custom settings of the application:
I have a couple of panels on the top and left sides, really don't know if thats related. Most settings are default.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb1a77740 (LWP 3285))]

Thread 5 (Thread 0xa93bcb40 (LWP 3345)):
#0  0xb2c25dcd in __GI_clock_gettime (clock_id=1, tp=0xa93bbfb8) at ../sysdeps/unix/clock_gettime.c:116
#1  0xb6329315 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#2  0xb6413226 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#3  0xb641357a in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#4  0xb6411e23 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#5  0xb6411ebd in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#6  0xb2b6e762 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb2b6ef6f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2b6f1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb64128e7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#10 0xb63de50d in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#11 0xb63de7a9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#12 0xb62c794c in QThread::exec() () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#13 0xb63bbb5d in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#14 0xb62cade0 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#15 0xb2c7fd4c in start_thread (arg=0xa93bcb40) at pthread_create.c:308
#16 0xb75eeace in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 4 (Thread 0xa89ffb40 (LWP 3346)):
#0  0xb75fc5d7 in pthread_mutex_lock (mutex=0xa8000550) at forward.c:182
#1  0xb2bae390 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2b6ea75 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2b6f002 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2b6f1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb64128e7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#6  0xb63de50d in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#7  0xb63de7a9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#8  0xb62c794c in QThread::exec() () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#9  0xb63bbb5d in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#10 0xb62cade0 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#11 0xb2c7fd4c in start_thread (arg=0xa89ffb40) at pthread_create.c:308
#12 0xb75eeace in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 3 (Thread 0xa7fffb40 (LWP 3347)):
#0  0xb774b424 in __kernel_vsyscall ()
#1  0xb2c8396b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0xb75fc3dc in __pthread_cond_wait (cond=0xb3d44890, mutex=0xb3d44878) at forward.c:139
#3  0xb3c40029 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb3c4006f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2c7fd4c in start_thread (arg=0xa7fffb40) at pthread_create.c:308
#6  0xb75eeace in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xa6a51b40 (LWP 3378)):
#0  0xb2c25dcd in __GI_clock_gettime (clock_id=1, tp=0xa6a50fe8) at ../sysdeps/unix/clock_gettime.c:116
#1  0xb6329315 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#2  0xb6413226 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#3  0xb641357a in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#4  0xb6411e23 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#5  0xb6411ebd in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#6  0xb2b6e762 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb2b6ef6f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2b6f1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb64128e7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#10 0xb63de50d in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#11 0xb63de7a9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#12 0xb62c794c in QThread::exec() () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#13 0xb735b2eb in ?? () from /usr/lib/libplasma.so.3
#14 0xb62cade0 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#15 0xb2c7fd4c in start_thread (arg=0xa6a51b40) at pthread_create.c:308
#16 0xb75eeace in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb1a77740 (LWP 3285)):
[KCrash Handler]
#7  0xb6403de4 in QVariant::userType() const () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#8  0xa9eceeb0 in ?? () from /usr/lib/kde4/plasma_applet_menubar.so
#9  0xa9ec4b32 in ?? () from /usr/lib/kde4/plasma_applet_menubar.so
#10 0xa9ec4bec in ?? () from /usr/lib/kde4/plasma_applet_menubar.so
#11 0xb655fa38 in ?? () from /usr/lib/i386-linux-gnu/libQtDBus.so.4
#12 0xb6569c8d in ?? () from /usr/lib/i386-linux-gnu/libQtDBus.so.4
#13 0xb63fac7b in QObject::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#14 0xb58caed4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#15 0xb58d030d in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#16 0xb6a79b21 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#17 0xb63df97e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#18 0xb63e3ad8 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#19 0xb63e3e0c in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#20 0xb6412494 in ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#21 0xb2b6ecda in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#22 0xb2b6f0e5 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#23 0xb2b6f1c1 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0xb6412887 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#25 0xb5983aaa in ?? () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#26 0xb63de50d in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#27 0xb63de7a9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#28 0xb63e3eba in QCoreApplication::exec() () from /usr/lib/i386-linux-gnu/libQtCore.so.4
#29 0xb58c8a74 in QApplication::exec() () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#30 0xb76ffa7b in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#31 0x0804850b in ?? ()
#32 0xb751d4d3 in __libc_start_main (main=0x80484f0, argc=1, ubp_av=0xbfe2a4b4, init=0x80485e0 <__libc_csu_init>, fini=0x8048650 <__libc_csu_fini>, rtld_fini=0xb775b270 <_dl_fini>, stack_end=0xbfe2a4ac) at libc-start.c:226
#33 0x08048531 in _start ()

Possible duplicates by query: bug 298605, bug 282308.

Reported using DrKonqi