Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.95 (KDE 4.2.95 (KDE 4.3 RC1))
Qt Version: 4.5.2
Operating System: Linux 2.6.30-desktop-2mnb i686
Distribution: "Mandriva Linux 2009.1"

What I was doing when the application crashed:
Running with the desktop effects on causes plasma to crash at random intervals. There does not seem to be any connection between what I was doing just before the crash.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5e7ea80 (LWP 27748))]

Thread 2 (Thread 0xa7c40b70 (LWP 27753)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7d12ad5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb7d6e280 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#3  0xb64b3d5c in ?? () from /usr/lib/libQtNetwork.so.4
#4  0xb7d6d143 in ?? () from /usr/lib/libQtCore.so.4
#5  0xb7d0e8e5 in start_thread () from /lib/i686/libpthread.so.0
#6  0xb675fbbe in clone () from /lib/i686/libc.so.6

Thread 1 (Thread 0xb5e7ea80 (LWP 27748)):
[KCrash Handler]
#6  0xa8538e24 in Tasks::itemTopMargin (this=0x0) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/applets/tasks/tasks.h:92
#7  0xa8537d58 in AbstractTaskItem::basicPreferredSize (this=0xa21ddc8) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/applets/tasks/abstracttaskitem.cpp:99
#8  0xa853081c in TaskItemLayout::preferredColumns (this=0x9ac3980) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/applets/tasks/taskitemlayout.cpp:206
#9  0xa8530d9a in TaskItemLayout::gridLayoutSize (this=0x9ac3980) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/applets/tasks/taskitemlayout.cpp:222
#10 0xa8530e9e in TaskItemLayout::layoutItems (this=0x9ac3980) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/applets/tasks/taskitemlayout.cpp:245
#11 0xa8531826 in TaskItemLayout::insert (this=0x9ac3980, index=2, item=0x9c8fec0) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/applets/tasks/taskitemlayout.cpp:125
#12 0xa8531ab3 in TaskItemLayout::addTaskItem (this=0x9ac3980, item=0x9c8fec0) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/applets/tasks/taskitemlayout.cpp:82
#13 0xa853e106 in TaskGroupItem::itemAdded (this=0x9aff4d0, groupableItem=0x9f86c20) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/applets/tasks/taskgroupitem.cpp:455
#14 0xa853ed05 in TaskGroupItem::qt_metacall (this=0x9aff4d0, _c=QMetaObject::InvokeMetaMethod, _id=28, _a=0xbfb77c28)
    at /usr/src/debug/kdebase-workspace-4.2.95/build/plasma/applets/tasks/taskgroupitem.moc:113
#15 0xb7e7cf29 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#16 0xb7e7dc65 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#17 0xa857b4c5 in TaskManager::TaskGroup::itemAdded (this=0x9adc680, _t1=0x9f86c20) at /usr/src/debug/kdebase-workspace-4.2.95/build/libs/taskmanager/taskgroup.moc:139
#18 0xa857d045 in TaskManager::TaskGroup::add (this=0x9adc680, item=0x9f86c20) at /usr/src/debug/kdebase-workspace-4.2.95/libs/taskmanager/taskgroup.cpp:138
#19 0xa855d3cb in TaskManager::AbstractGroupingStrategy::closeGroup (this=0x9124620, group=0xa0aa3c8) at /usr/src/debug/kdebase-workspace-4.2.95/libs/taskmanager/abstractgroupingstrategy.cpp:165
#20 0xa8567d85 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0x9124620) at /usr/src/debug/kdebase-workspace-4.2.95/libs/taskmanager/strategies/programgroupingstrategy.cpp:204
#21 0xa8568793 in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0x9124620, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbfb77e78)
    at /usr/src/debug/kdebase-workspace-4.2.95/build/libs/taskmanager/programgroupingstrategy.moc:68
#22 0xb7e7cf29 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#23 0xb7e7dc65 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#24 0xa857b475 in TaskManager::TaskGroup::itemRemoved (this=0xa0aa3c8, _t1=0x9f6a5e0) at /usr/src/debug/kdebase-workspace-4.2.95/build/libs/taskmanager/taskgroup.moc:146
#25 0xa857cd2b in TaskManager::TaskGroup::remove (this=0xa0aa3c8, item=0x9f6a5e0) at /usr/src/debug/kdebase-workspace-4.2.95/libs/taskmanager/taskgroup.cpp:182
#26 0xa8560c46 in TaskManager::GroupManagerPrivate::removeTask (this=0x9b00a80, task={d = 0xa217160}) at /usr/src/debug/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:311
#27 0xa8561fa6 in TaskManager::GroupManager::qt_metacall (this=0x9af0950, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbfb78038)
    at /usr/src/debug/kdebase-workspace-4.2.95/build/libs/taskmanager/groupmanager.moc:105
#28 0xb7e7cf29 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#29 0xb7e7dc65 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#30 0xa857f555 in TaskManager::TaskManager::taskRemoved (this=0x9a9ff68, _t1={d = 0xa217160}) at /usr/src/debug/kdebase-workspace-4.2.95/build/libs/taskmanager/taskmanager.moc:162
#31 0xa8580399 in TaskManager::TaskManager::windowRemoved (this=0x9a9ff68, w=39855873) at /usr/src/debug/kdebase-workspace-4.2.95/libs/taskmanager/taskmanager.cpp:278
#32 0xa8580f45 in TaskManager::TaskManager::qt_metacall (this=0x9a9ff68, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfb781c8)
    at /usr/src/debug/kdebase-workspace-4.2.95/build/libs/taskmanager/taskmanager.moc:110
#33 0xb7e7cf29 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#34 0xb7e7dc65 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#35 0xb757a0b5 in KWindowSystem::windowRemoved (this=0x93665f8, _t1=39855873) at /usr/src/debug/kdelibs-4.2.95/build/kdeui/kwindowsystem.moc:127
#36 0xb757cbd8 in KWindowSystemPrivate::removeClient (this=0x9346488, w=39855873) at /usr/src/debug/kdelibs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#37 0xb758a2be in NETRootInfo::update (this=0x934649c, dirty_props=0xbfb78338) at /usr/src/debug/kdelibs-4.2.95/kdeui/windowmanagement/netwm.cpp:2135
#38 0xb758b500 in NETRootInfo::event (this=0x934649c, event=<value optimized out>, properties=0xbfb78420, properties_size=5) at /usr/src/debug/kdelibs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#39 0xb757ccb7 in KWindowSystemPrivate::x11Event (this=0x9346488, ev=0xbfb79a7c) at /usr/src/debug/kdelibs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#40 0xb7441e7a in KAppX11HackWidget::publicx11Event (this=0x9346488, e=0xbfb79a7c) at /usr/src/debug/kdelibs-4.2.95/kdeui/kernel/kapplication.cpp:900
#41 0xb743ec6a in KApplication::x11EventFilter (this=0x908ccb8, _event=0xbfb79a7c) at /usr/src/debug/kdelibs-4.2.95/kdeui/kernel/kapplication.cpp:950
#42 0xb403c6bc in PlasmaApp::x11EventFilter (this=0x908ccb8, event=0xbfb79a7c) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/shells/desktop/plasmaapp.cpp:490
#43 0xb6a4f041 in ?? () from /usr/lib/libQtGui.so.4
#44 0xb6a60bcd in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#45 0xb6a8d7c8 in ?? () from /usr/lib/libQtGui.so.4
#46 0xb65d5e32 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#47 0xb65d94a8 in ?? () from /usr/lib/libglib-2.0.so.0
#48 0xb65d95ce in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#49 0xb7e929d8 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#50 0xb6a8cefa in ?? () from /usr/lib/libQtGui.so.4
#51 0xb7e64d8d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#52 0xb7e651d9 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#53 0xb7e676c0 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#54 0xb69e9f44 in QApplication::exec () from /usr/lib/libQtGui.so.4
#55 0xb40244ce in kdemain (argc=1, argv=0x9026918) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/shells/desktop/main.cpp:50
#56 0x0804db4a in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x90642b8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051ba8 "0") at /usr/src/debug/kdelibs-4.2.95/kinit/kinit.cpp:672
#57 0x0804e2a5 in handle_launcher_request (sock=7, who=<value optimized out>) at /usr/src/debug/kdelibs-4.2.95/kinit/kinit.cpp:1164
#58 0x0804f014 in handle_requests (waitForPid=<value optimized out>) at /usr/src/debug/kdelibs-4.2.95/kinit/kinit.cpp:1357
#59 0x0804f8a5 in main (argc=2, argv=0xbfb7a454, envp=0xbfb7a460) at /usr/src/debug/kdelibs-4.2.95/kinit/kinit.cpp:1784

Reported using DrKonqi