Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Plasma always crashes after few desktop switches

KDE 4.3.1, Ubuntu 9.04

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 0 (LWP 3116)]

Thread 2 (Thread 0xa932db90 (LWP 3117)):
#0  0xb80b9430 in __kernel_vsyscall ()
#1  0xb51ff0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb64042ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb65e9172 in QWaitCondition::wait (this=0x9f629d0, mutex=0x9f629cc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7a28ac2 in QHostInfoAgent::run (this=0x9f629c0) at kernel/qhostinfo.cpp:260
#5  0xb65e8132 in QThreadPrivate::start (arg=0x9f629c0) at thread/qthread_unix.cpp:188
#6  0xb51fb4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb63f549e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb4d31710 (LWP 3116)):
[KCrash Handler]
#6  AbstractTaskItem::basicPreferredSize (this=0xa377730) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.h:92
#7  0xa9687641 in TaskItemLayout::preferredColumns (this=0x9e89018) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:206
#8  0xa968806d in TaskItemLayout::gridLayoutSize (this=0x9e89018) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:222
#9  0xa968812b in TaskItemLayout::layoutItems (this=0x9e89018) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:245
#10 0xa9688d12 in TaskItemLayout::insert (this=0x9e89018, index=6, item=0xa039ae8) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:125
#11 0xa9688f07 in TaskItemLayout::addTaskItem (this=0x9e89018, item=0xa039ae8) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:82
#12 0xa9695c45 in TaskGroupItem::itemAdded (this=0x9e89628, groupableItem=0x9853990) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskgroupitem.cpp:477
#13 0xa96962ac in TaskGroupItem::qt_metacall (this=0x9e89628, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0xbfed5f7c)
    at /build/buildd/kdebase-workspace-4.3.1/obj-i486-linux-gnu/plasma/applets/tasks/taskgroupitem.moc:113
#14 0xb66f21b8 in QMetaObject::activate (sender=0x9e89520, from_signal_index=21, to_signal_index=21, argv=0xbfed5f7c) at kernel/qobject.cpp:3113
#15 0xb66f2e42 in QMetaObject::activate (sender=0x9e89520, m=0xa96d6b74, local_signal_index=0, argv=0xbfed5f7c) at kernel/qobject.cpp:3187
#16 0xa96c7f33 in TaskManager::TaskGroup::itemAdded (this=0x9e89520, _t1=0x9853990) at /build/buildd/kdebase-workspace-4.3.1/obj-i486-linux-gnu/libs/taskmanager/taskgroup.moc:139
#17 0xa96c8b95 in TaskManager::TaskGroup::add (this=0x9e89520, item=0x9853990) at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/taskgroup.cpp:138
#18 0xa96b5736 in TaskManager::ProgramGroupingStrategy::handleItem (this=0x9f0fc10, item=0x9853990)
    at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/strategies/programgroupingstrategy.cpp:154
#19 0xa96aed25 in TaskManager::GroupManagerPrivate::addTask (this=0x9e57950, task={d = 0xbfed60e4}) at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/groupmanager.cpp:288
#20 0xa96afb3a in TaskManager::GroupManagerPrivate::actuallyReloadTasks (this=0x9e57950) at /build/buildd/kdebase-workspace-4.3.1/libs/taskmanager/groupmanager.cpp:155
#21 0xa96b10de in TaskManager::GroupManager::qt_metacall (this=0x9e978f0, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0xbfed61b8)
    at /build/buildd/kdebase-workspace-4.3.1/obj-i486-linux-gnu/libs/taskmanager/groupmanager.moc:108
#22 0xb66f21b8 in QMetaObject::activate (sender=0x9e57990, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#23 0xb66f2e42 in QMetaObject::activate (sender=0x9e57990, m=0xb67cf904, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#24 0xb672e687 in QTimer::timeout (this=0x9e57990) at .moc/release-shared/moc_qtimer.cpp:128
#25 0xb66f85ce in QTimer::timerEvent (this=0x9e57990, e=0xbfed663c) at kernel/qtimer.cpp:261
#26 0xb66ed16f in QObject::event (this=0x9e57990, e=0xbfed663c) at kernel/qobject.cpp:1075
#27 0xb6968d3c in QApplicationPrivate::notify_helper (this=0x984e4a8, receiver=0x9e57990, e=0xbfed663c) at kernel/qapplication.cpp:4056
#28 0xb697103e in QApplication::notify (this=0x9848410, receiver=0x9e57990, e=0xbfed663c) at kernel/qapplication.cpp:3603
#29 0xb77ab85d in KApplication::notify (this=0x9848410, receiver=0x9e57990, event=0xbfed663c) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#30 0xb66dcbcb in QCoreApplication::notifyInternal (this=0x9848410, receiver=0x9e57990, event=0xbfed663c) at kernel/qcoreapplication.cpp:610
#31 0xb670bd51 in QTimerInfoList::activateTimers (this=0x985aaf4) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#32 0xb67083a0 in timerSourceDispatch (source=0x985aac0) at kernel/qeventdispatcher_glib.cpp:165
#33 0xb4ff9b88 in IA__g_main_context_dispatch (context=0x985aa00) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#34 0xb4ffd0eb in g_main_context_iterate (context=0x985aa00, block=1, dispatch=1, self=0x984dff0) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#35 0xb4ffd268 in IA__g_main_context_iteration (context=0x985aa00, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#36 0xb67082f8 in QEventDispatcherGlib::processEvents (this=0x98334a0, flags={i = -1074960456}) at kernel/qeventdispatcher_glib.cpp:327
#37 0xb6a0aa75 in QGuiEventDispatcherGlib::processEvents (this=0x98334a0, flags={i = -1074960408}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb66db1fa in QEventLoop::processEvents (this=0xbfed6860, flags={i = -1074960344}) at kernel/qeventloop.cpp:149
#39 0xb66db642 in QEventLoop::exec (this=0xbfed6860, flags={i = -1074960280}) at kernel/qeventloop.cpp:201
#40 0xb66ddae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#41 0xb6968bb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#42 0xb8059310 in kdemain (argc=1, argv=0xbfed6a14) at /build/buildd/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#43 0x08048712 in main (argc=) at /build/buildd/kdebase-workspace-4.3.1/obj-i486-linux-gnu/plasma/shells/desktop/plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 205924

Reported using DrKonqi