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 2.6.31-desktop-0.rc5.2mnb i686
Distribution: "Mandriva Linux 2009.1"

What I was doing when the application crashed:
I am using Dolphin and Ark.
Suddenly, plasma crashed

 -- Backtrace:
Application: Espace de travail Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5f49a80 (LWP 8008))]

Thread 3 (Thread 0xa83a9b70 (LWP 8013)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7dca9e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb7e25fc0 in QWaitCondition::wait (this=0x8db33e8, mutex=0x8db33e4, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  0xb657cd24 in QHostInfoAgent::run (this=0x8db33d8) at kernel/qhostinfo.cpp:260
#4  0xb7e24e93 in QThreadPrivate::start (arg=0x8db33d8) at thread/qthread_unix.cpp:188
#5  0xb7dc6885 in start_thread () from /lib/i686/libpthread.so.0
#6  0xb682457e in clone () from /lib/i686/libc.so.6

Thread 2 (Thread 0xa6174b70 (LWP 8023)):
#0  0xb672d016 in clock_gettime () from /lib/i686/librt.so.1
#1  0xb7f49fb4 in QTimerInfoList::getTime (this=0xa09e264, t=@0xa09e288) at kernel/qeventdispatcher_unix.cpp:339
#2  0xb7f4a1f2 in QTimerInfoList::updateCurrentTime (this=0xa09e264) at kernel/qeventdispatcher_unix.cpp:297
#3  0xb7f4acf2 in QTimerInfoList::timerWait (this=0xa09e264, tm=@0xa61740f4) at kernel/qeventdispatcher_unix.cpp:420
#4  0xb7f485c3 in timerSourcePrepare (source=0xa09e230, timeout=0xa617414c) at kernel/qeventdispatcher_glib.cpp:141
#5  0xb669f0d8 in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#6  0xb669f479 in ?? () from /usr/lib/libglib-2.0.so.0
#7  0xb669f9ae in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#8  0xb7f48417 in QEventDispatcherGlib::processEvents (this=0xa018098, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:329
#9  0xb7f1ad7d in QEventLoop::processEvents (this=0xa61742e4, flags=) at kernel/qeventloop.cpp:149
#10 0xb7f1b1c9 in QEventLoop::exec (this=0xa61742e4, flags={i = 0}) at kernel/qeventloop.cpp:201
#11 0xb7e21b77 in QThread::exec (this=0xa019df0) at thread/qthread.cpp:487
#12 0xa7b5417e in ?? () from /usr/lib/kde4/plugins/marble/GpsdPositionProviderPlugin.so
#13 0xb7e24e93 in QThreadPrivate::start (arg=0xa019df0) at thread/qthread_unix.cpp:188
#14 0xb7dc6885 in start_thread () from /lib/i686/libpthread.so.0
#15 0xb682457e in clone () from /lib/i686/libc.so.6

Thread 1 (Thread 0xb5f49a80 (LWP 8008)):
[KCrash Handler]
#6  0xa8d58d04 in Tasks::itemTopMargin (this=0x0) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/tasks.h:92
#7  0xa8d57cc8 in AbstractTaskItem::basicPreferredSize (this=0xa84f368) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/abstracttaskitem.cpp:99
#8  0xa8d5073c in TaskItemLayout::preferredColumns (this=0x8e180c8) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:206
#9  0xa8d50caa in TaskItemLayout::gridLayoutSize (this=0x8e180c8) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:222
#10 0xa8d50dae in TaskItemLayout::layoutItems (this=0x8e180c8) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:245
#11 0xa8d5161b in TaskItemLayout::remove (this=0x8e180c8, item=0xa89fe70) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:136
#12 0xa8d51772 in TaskItemLayout::removeTaskItem (this=0x8e180c8, item=0xa89fe70) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:93
#13 0xa8d5ce16 in TaskGroupItem::itemRemoved (this=0x8e48d68, groupableItem=0xa64bce0) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/applets/tasks/taskgroupitem.cpp:521
#14 0xa8d5ee1d in TaskGroupItem::qt_metacall (this=0x8e48d68, _c=QMetaObject::InvokeMetaMethod, _id=30, _a=0xbf9a3de8)
    at /usr/src/debug/kdebase-workspace-4.3.0/build/plasma/applets/tasks/taskgroupitem.moc:114
#15 0xb7f32c44 in QMetaObject::activate (sender=0x8e18410, from_signal_index=22, to_signal_index=22, argv=0xbf9a3de8) at kernel/qobject.cpp:3112
#16 0xb7f33965 in QMetaObject::activate (sender=0x8e18410, m=0xa8dbbbf4, local_signal_index=1, argv=0xbf9a3de8) at kernel/qobject.cpp:3186
#17 0xa8d9c415 in TaskManager::TaskGroup::itemRemoved (this=0x8e18410, _t1=0xa64bce0) at /usr/src/debug/kdebase-workspace-4.3.0/build/libs/taskmanager/taskgroup.moc:146
#18 0xa8d9dc7b in TaskManager::TaskGroup::remove (this=0x8e18410, item=0xa64bce0) at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/taskgroup.cpp:182
#19 0xa8d81dde in TaskManager::GroupManagerPrivate::removeTask (this=0x8e28110, task=) at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/groupmanager.cpp:311
#20 0xa8d8312e in TaskManager::GroupManager::qt_metacall (this=0x89d4500, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbf9a3fc8)
    at /usr/src/debug/kdebase-workspace-4.3.0/build/libs/taskmanager/groupmanager.moc:105
#21 0xb7f32c44 in QMetaObject::activate (sender=0x89c7bd8, from_signal_index=5, to_signal_index=5, argv=0xbf9a3fc8) at kernel/qobject.cpp:3112
#22 0xb7f33965 in QMetaObject::activate (sender=0x89c7bd8, m=0xa8dbbdbc, local_signal_index=1, argv=0xbf9a3fc8) at kernel/qobject.cpp:3186
#23 0xa8da0455 in TaskManager::TaskManager::taskRemoved (this=0x89c7bd8, _t1={d = 0xa4e5e38}) at /usr/src/debug/kdebase-workspace-4.3.0/build/libs/taskmanager/taskmanager.moc:162
#24 0xa8da1289 in TaskManager::TaskManager::windowRemoved (this=0x89c7bd8, w=83886109) at /usr/src/debug/kdebase-workspace-4.3.0/libs/taskmanager/taskmanager.cpp:278
#25 0xa8da1e0d in TaskManager::TaskManager::qt_metacall (this=0x89c7bd8, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbf9a4158)
    at /usr/src/debug/kdebase-workspace-4.3.0/build/libs/taskmanager/taskmanager.moc:110
#26 0xb7f32c44 in QMetaObject::activate (sender=0x8767cf0, from_signal_index=6, to_signal_index=6, argv=0xbf9a4158) at kernel/qobject.cpp:3112
#27 0xb7f33965 in QMetaObject::activate (sender=0x8767cf0, m=0xb772a24c, local_signal_index=2, argv=0xbf9a4158) at kernel/qobject.cpp:3186
#28 0xb76334e5 in KWindowSystem::windowRemoved (this=0x8767cf0, _t1=83886109) at /usr/src/debug/kdelibs-4.3.0/build/kdeui/kwindowsystem.moc:127
#29 0xb7635fe8 in KWindowSystemPrivate::removeClient (this=0x867d150, w=83886109) at /usr/src/debug/kdelibs-4.3.0/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#30 0xb76437d5 in NETRootInfo::update (this=0x867d164, dirty_props=0xbf9a42d8) at /usr/src/debug/kdelibs-4.3.0/kdeui/windowmanagement/netwm.cpp:2183
#31 0xb7644ab0 in NETRootInfo::event (this=0x867d164, event=<value optimized out>, properties=0xbf9a43c0, properties_size=5) at /usr/src/debug/kdelibs-4.3.0/kdeui/windowmanagement/netwm.cpp:2058
#32 0xb76360c7 in KWindowSystemPrivate::x11Event (this=0x867d150, ev=0xbf9a5a1c) at /usr/src/debug/kdelibs-4.3.0/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#33 0xb74fc74a in KAppX11HackWidget::publicx11Event (this=0x867d150, e=0xbf9a5a1c) at /usr/src/debug/kdelibs-4.3.0/kdeui/kernel/kapplication.cpp:900
#34 0xb74f957a in KApplication::x11EventFilter (this=0x853c448, _event=0xbf9a5a1c) at /usr/src/debug/kdelibs-4.3.0/kdeui/kernel/kapplication.cpp:950
#35 0xb4a124dc in PlasmaApp::x11EventFilter (this=0x853c448, event=0xbf9a5a1c) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/shells/desktop/plasmaapp.cpp:490
#36 0xb6b12971 in qt_x11EventFilter (ev=0xbf9a5a1c) at kernel/qapplication_x11.cpp:375
#37 0xb6b243fd in QApplication::x11ProcessEvent (this=0x853c448, event=0xbf9a5a1c) at kernel/qapplication_x11.cpp:3271
#38 0xb6b50de8 in x11EventSourceDispatch (s=0x8545300, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#39 0xb669bed2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#40 0xb669f888 in ?? () from /usr/lib/libglib-2.0.so.0
#41 0xb669f9ae in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#42 0xb7f483c8 in QEventDispatcherGlib::processEvents (this=0x8540fe8, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#43 0xb6b5051a in QGuiEventDispatcherGlib::processEvents (this=0x8540fe8, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#44 0xb7f1ad7d in QEventLoop::processEvents (this=0xbf9a5cd4, flags=) at kernel/qeventloop.cpp:149
#45 0xb7f1b1c9 in QEventLoop::exec (this=0xbf9a5cd4, flags={i = 0}) at kernel/qeventloop.cpp:201
#46 0xb7f1d660 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#47 0xb6aae544 in QApplication::exec () at kernel/qapplication.cpp:3525
#48 0xb49fa4ae in kdemain (argc=1, argv=0x85053b0) at /usr/src/debug/kdebase-workspace-4.3.0/plasma/shells/desktop/main.cpp:50
#49 0x0804dba8 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x84f8920 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051ba4 "0") at /usr/src/debug/kdelibs-4.3.0/kinit/kinit.cpp:676
#50 0x0804e2ed in handle_launcher_request (sock=7, who=<value optimized out>) at /usr/src/debug/kdelibs-4.3.0/kinit/kinit.cpp:1168
#51 0x0804f04c in handle_requests (waitForPid=<value optimized out>) at /usr/src/debug/kdelibs-4.3.0/kinit/kinit.cpp:1361
#52 0x0804f8c5 in main (argc=2, argv=0xbf9a63f4, envp=0xbf9a6400) at /usr/src/debug/kdelibs-4.3.0/kinit/kinit.cpp:1788

Reported using DrKonqi