Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.31.5-127.fc12.i686 i686

What I was doing when the application crashed:
one of many bugs due to virus infecting the computer (boot sector still infected after low level format, flashed bios and cmos...) 

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb775e7a0 (LWP 1726))]

Thread 2 (Thread 0xac693b70 (LWP 1727)):
#0  0x00501416 in __kernel_vsyscall ()
#1  0x00705c45 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x04fcbe5f in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#3  0x0057c262 in ?? () from /usr/lib/libQtNetwork.so.4
#4  0x04fcade3 in ?? () from /usr/lib/libQtCore.so.4
#5  0x00701ab5 in start_thread () from /lib/libpthread.so.0
#6  0x025a383e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb775e7a0 (LWP 1726)):
[KCrash Handler]
#6  0x0199511c in QGraphicsLayoutItem::geometry() const () from /usr/lib/libQtGui.so.4
#7  0x01998db0 in QGraphicsWidget::size() const () from /usr/lib/libQtGui.so.4
#8  0x08980b9c in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#9  0x0897c59b in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#10 0x0897d2eb in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#11 0x0897d3ac in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#12 0x0897deda in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#13 0x0897e0bf in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#14 0x0898b112 in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#15 0x0898b7a7 in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#16 0x050d1bfc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#17 0x050d2833 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#18 0x020226f4 in TaskManager::TaskGroup::itemAdded(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#19 0x0202317b in TaskManager::TaskGroup::add(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#20 0x020073ae in TaskManager::AbstractGroupingStrategy::closeGroup(TaskManager::TaskGroup*) () from /usr/lib/libtaskmanager.so.4
#21 0x0200efac in ?? () from /usr/lib/libtaskmanager.so.4
#22 0x0200ff3d in ?? () from /usr/lib/libtaskmanager.so.4
#23 0x050d1bfc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#24 0x050d2833 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#25 0x020226a4 in TaskManager::TaskGroup::itemRemoved(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#26 0x02022eeb in TaskManager::TaskGroup::remove(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#27 0x0200a61d in ?? () from /usr/lib/libtaskmanager.so.4
#28 0x0200c3c3 in TaskManager::GroupManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libtaskmanager.so.4
#29 0x050d1bfc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#30 0x050d2833 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#31 0x02026204 in TaskManager::TaskManager::taskRemoved(KSharedPtr<TaskManager::Task>) () from /usr/lib/libtaskmanager.so.4
#32 0x02027f97 in TaskManager::TaskManager::windowRemoved(unsigned long) () from /usr/lib/libtaskmanager.so.4
#33 0x020298df in TaskManager::TaskManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libtaskmanager.so.4
#34 0x050d1bfc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#35 0x050d2833 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#36 0x0115f1d4 in KWindowSystem::windowRemoved(unsigned long) () from /usr/lib/libkdeui.so.5
#37 0x01162556 in ?? () from /usr/lib/libkdeui.so.5
#38 0x01170c0f in NETRootInfo::update(unsigned long const*) () from /usr/lib/libkdeui.so.5
#39 0x01171777 in NETRootInfo::event(_XEvent*, unsigned long*, int) () from /usr/lib/libkdeui.so.5
#40 0x011627f1 in ?? () from /usr/lib/libkdeui.so.5
#41 0x0100ce96 in KApplication::x11EventFilter(_XEvent*) () from /usr/lib/libkdeui.so.5
#42 0x001624bb in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x013a3bb1 in ?? () from /usr/lib/libQtGui.so.4
#44 0x013b5001 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#45 0x013e1c92 in ?? () from /usr/lib/libQtGui.so.4
#46 0x01d09118 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#47 0x01d0ca48 in ?? () from /lib/libglib-2.0.so.0
#48 0x01d0cb74 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#49 0x050e6b5d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#50 0x013e1356 in ?? () from /usr/lib/libQtGui.so.4
#51 0x050ba29a in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#52 0x050ba6fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#53 0x050bcbe7 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#54 0x013419a8 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#55 0x0014c54a in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#56 0x080486fc in _start ()

Reported using DrKonqi