Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.31.9-174.fc12.i686 i686

What I was doing when the application crashed:
i don't think i had the widgets locked, and i let my girlfriend on my computer, and when i got back on my bottom panel on my left screen was dragged to the left, and my task manager and pager were gone. also, there were 2 new panels opened up in the top left of that same screen. she said she didn't mess with anything, but it never happened before. i restored everything to normal, locked the panels, got into firefox, and KDE crashed.

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb789b9d0 (LWP 1614))]

Thread 2 (Thread 0xac7c1b70 (LWP 1615)):
#0  0x00629416 in __kernel_vsyscall ()
#1  0x00537c45 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x04955e5f in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#3  0x04d12e42 in ?? () from /usr/lib/libQtNetwork.so.4
#4  0x04954de3 in ?? () from /usr/lib/libQtCore.so.4
#5  0x00533ab5 in start_thread () from /lib/libpthread.so.0
#6  0x0045edce in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb789b9d0 (LWP 1614)):
[KCrash Handler]
#6  0x05fa50aa in KDirModel::dirLister() const () from /usr/lib/libkio.so.5
#7  0x0655d3f0 in KFilePreviewGenerator::Private::updateCutItems() () from /usr/lib/libkfile.so.4
#8  0x0655e13e in KFilePreviewGenerator::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkfile.so.4
#9  0x04a5bc0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#10 0x04a5c843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x057f1368 in QClipboard::dataChanged() () from /usr/lib/libQtGui.so.4
#12 0x051de9f1 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#13 0x05209c92 in ?? () from /usr/lib/libQtGui.so.4
#14 0x00837128 in g_main_dispatch (context=<value optimized out>) at gmain.c:1960
#15 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2513
#16 0x0083aa58 in g_main_context_iterate (context=<value optimized out>, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2591
#17 0x0083ab84 in IA__g_main_context_iteration (context=0x94eda90, may_block=<value optimized out>) at gmain.c:2654
#18 0x04a70b6d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#19 0x05209356 in ?? () from /usr/lib/libQtGui.so.4
#20 0x04a442aa in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#21 0x04a4470a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#22 0x04a46bf7 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#23 0x051699a8 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#24 0x0688b5e7 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#25 0x080486fc in _start ()

Reported using DrKonqi