Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30.8-64.fc11.x86_64 x86_64

What I was doing when the application crashed:
was seeing a movie, updating using yum and transferring a folder from harddisk to flashdisk when the crash happened.

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f4594339820 (LWP 2289))]

Thread 2 (Thread 0x7f457e8d2910 (LWP 2290)):
#0  0x00000038cfc0b2f9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000003176a5ad7b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x0000003177481dac in ?? () from /usr/lib64/libQtNetwork.so.4
#3  0x0000003176a59cd5 in ?? () from /usr/lib64/libQtCore.so.4
#4  0x00000038cfc0686a in start_thread () from /lib64/libpthread.so.0
#5  0x00000038cf0de39d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4594339820 (LWP 2289)):
[KCrash Handler]
#5  0x000000376fcfef34 in Plasma::ExtenderItem::group() const () from /usr/lib64/libplasma.so.3
#6  0x000000376fcfd768 in Plasma::ExtenderGroup::items() const () from /usr/lib64/libplasma.so.3
#7  0x00007f457fe3dc63 in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib64/kde4/plasma_applet_systemtray.so
#8  0x00007f457fe3e660 in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib64/kde4/plasma_applet_systemtray.so
#9  0x0000003176b54fdc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#10 0x00007f457fe3ed22 in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib64/kde4/plasma_applet_systemtray.so
#11 0x00007f457fe3ff44 in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib64/kde4/plasma_applet_systemtray.so
#12 0x0000003176b54fdc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#13 0x00007f457fe41e72 in Plasma::Theme::font(Plasma::Theme::FontRole) const () from /usr/lib64/kde4/plasma_applet_systemtray.so
#14 0x0000003176b4ef93 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#15 0x0000003177f8f69c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#16 0x0000003177f966ce in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#17 0x000000376bc11296 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#18 0x0000003176b3fcbc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#19 0x0000003176b6aa72 in ?? () from /usr/lib64/libQtCore.so.4
#20 0x0000003176b6846d in ?? () from /usr/lib64/libQtCore.so.4
#21 0x00000038d1037abe in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#22 0x00000038d103b278 in ?? () from /lib64/libglib-2.0.so.0
#23 0x00000038d103b3a0 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#24 0x0000003176b683b6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#25 0x000000317802242e in ?? () from /usr/lib64/libQtGui.so.4
#26 0x0000003176b3e5f2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#27 0x0000003176b3e9c4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#28 0x0000003176b40b79 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#29 0x000000376c23aeaf in kdemain () from /usr/lib64/libkdeinit4_plasma-desktop.so
#30 0x00000038cf01ea2d in __libc_start_main () from /lib64/libc.so.6
#31 0x0000000000400779 in _start ()

Reported using DrKonqi