Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-20-generic-pae i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I just open amarok, and ask me if I wanted to use kwallet with a messagebox with yes and no buttons, and crashed.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb588e700 (LWP 7659))]

Thread 4 (Thread 0xa8c82b70 (LWP 7688)):
#0  0xb78c0430 in __kernel_vsyscall ()
#1  0xb5fe9e15 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0xb61ae87d in __pthread_cond_wait (cond=0xa74a668, mutex=0xa74a650) at forward.c:139
#3  0xb76c4e67 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#4  0xb5efb922 in ?? () from /usr/lib/libQtNetwork.so.4
#5  0xb76c3e32 in ?? () from /usr/lib/libQtCore.so.4
#6  0xb5fe580e in start_thread (arg=0xa8c82b70) at pthread_create.c:300
#7  0xb61a18de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 3 (Thread 0xa6806b70 (LWP 7916)):
#0  0xb78c0430 in __kernel_vsyscall ()
#1  0xb5fea142 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:179
#2  0xb61ae8d4 in __pthread_cond_timedwait (cond=0xb1728a8, mutex=0xb172890, abstime=0xa6806330) at forward.c:152
#3  0xa5e8d9ff in ?? () from /usr/lib/libxine.so.1
#4  0xb5fe580e in start_thread (arg=0xa6806b70) at pthread_create.c:300
#5  0xb61a18de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xa5a2eb70 (LWP 7917)):
#0  0xb60b3e06 in *__GI_clock_gettime (clock_id=-1240760332, tp=0xa5a2dff8) at ../sysdeps/unix/clock_gettime.c:100
#1  0xb77e0bf3 in ?? () from /usr/lib/libQtCore.so.4
#2  0xb77e0de1 in ?? () from /usr/lib/libQtCore.so.4
#3  0xb77e188c in ?? () from /usr/lib/libQtCore.so.4
#4  0xb77df210 in ?? () from /usr/lib/libQtCore.so.4
#5  0xb6034f90 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#6  0xb6035351 in ?? () from /lib/libglib-2.0.so.0
#7  0xb6035863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#8  0xb77df067 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#9  0xb77b2c79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#10 0xb77b30ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#11 0xb76c0b73 in QThread::exec() () from /usr/lib/libQtCore.so.4
#12 0xa5eed20a in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#13 0xb76c3e32 in ?? () from /usr/lib/libQtCore.so.4
#14 0xb5fe580e in start_thread (arg=0xa5a2eb70) at pthread_create.c:300
#15 0xb61a18de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb588e700 (LWP 7659)):
[KCrash Handler]
#6  0xb713caaa in KDirModel::dirLister() const () from /usr/lib/libkio.so.5
#7  0xb4353a8e in KFilePreviewGenerator::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkfile.so.4
#8  0xb77ca263 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#9  0xb77caec2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#10 0xb6ab60e7 in QClipboard::dataChanged() () from /usr/lib/libQtGui.so.4
#11 0xb64a2d37 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#12 0xb64cf502 in ?? () from /usr/lib/libQtGui.so.4
#13 0xb6031e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#14 0xb6035730 in ?? () from /lib/libglib-2.0.so.0
#15 0xb6035863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#16 0xb77df02c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#17 0xb64cebe5 in ?? () from /usr/lib/libQtGui.so.4
#18 0xb77b2c79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#19 0xb77b30ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#20 0xb77b553f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#21 0xb642ddd7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#22 0xb440580d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#23 0x0804dde1 in _start ()

Reported using DrKonqi