Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-16-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
It happened after a few consecutive switchings

 -- Backtrace:
Application: Spazio di lavoro di Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7883700 (LWP 1474))]

Thread 2 (Thread 0xac6dbb70 (LWP 1477)):
#0  0x00954422 in __kernel_vsyscall ()
#1  0x008d7e15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x0086378d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0035ee67 in QWaitConditionPrivate::wait (this=0x8f546f0, mutex=0x8f546ec, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x8f546f0, mutex=0x8f546ec, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x02514922 in QHostInfoAgent::run (this=0x8f546e0) at kernel/qhostinfo.cpp:260
#6  0x0035de32 in QThreadPrivate::start (arg=0x8f546e0) at thread/qthread_unix.cpp:188
#7  0x008d380e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x008567ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7883700 (LWP 1474)):
[KCrash Handler]
#6  0x03dade2c in QGraphicsLayoutItem::geometry (this=0x6f0073) at graphicsview/qgraphicslayoutitem.cpp:664
#7  0x03db1a4f in QGraphicsWidget::size (this=0x6f0063) at graphicsview/qgraphicswidget.cpp:336
#8  0x02254aba in AbstractTaskItem::basicPreferredSize (this=0x97a62b0) at ../../../../plasma/applets/tasks/abstracttaskitem.cpp:108
#9  0x022504eb in TaskItemLayout::preferredColumns (this=0x8f15d00) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:206
#10 0x0225123a in TaskItemLayout::gridLayoutSize (this=0x8f15d00) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:222
#11 0x022512fb in TaskItemLayout::layoutItems (this=0x8f15d00) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:245
#12 0x02251e2a in TaskItemLayout::insert (this=0x8f15d00, index=1, item=0x980d5c8) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:125
#13 0x0225200f in TaskItemLayout::addTaskItem (this=0x8f15d00, item=0x980d5c8) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:82
#14 0x0225efa2 in TaskGroupItem::itemAdded (this=0x8f2ae88, groupableItem=0x975c258) at ../../../../plasma/applets/tasks/taskgroupitem.cpp:477
#15 0x0225f627 in TaskGroupItem::qt_metacall (this=0x8f2ae88, _c=QMetaObject::InvokeMetaMethod, _id=29, _a=0xbfcc08c8) at ./taskgroupitem.moc:113
#16 0x00464263 in QMetaObject::activate (sender=0x8e79d48, from_signal_index=21, to_signal_index=21, argv=0xbfcc08c8) at kernel/qobject.cpp:3113
#17 0x00464ec2 in QMetaObject::activate (sender=0x8e79d48, m=0x15e5bf4, local_signal_index=0, argv=0xbfcc08c8) at kernel/qobject.cpp:3187
#18 0x015d7433 in TaskManager::TaskGroup::itemAdded (this=0x8e79d48, _t1=0x975c258) at ./taskgroup.moc:145
#19 0x015d7e8b in TaskManager::TaskGroup::add (this=0x8e79d48, item=0x975c258) at ../../../libs/taskmanager/taskgroup.cpp:138
#20 0x015bf052 in TaskManager::GroupManagerPrivate::addTask (this=0x8ebb618, task=) at ../../../libs/taskmanager/groupmanager.cpp:290
#21 0x015bfa45 in TaskManager::GroupManagerPrivate::actuallyReloadTasks (this=0x8ebb618) at ../../../libs/taskmanager/groupmanager.cpp:155
#22 0x015c13be in TaskManager::GroupManager::qt_metacall (this=0x8e7f5d0, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0xbfcc0adc) at ./groupmanager.moc:108
#23 0x00464263 in QMetaObject::activate (sender=0x8ebb658, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#24 0x00464ec2 in QMetaObject::activate (sender=0x8ebb658, m=0x53f904, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#25 0x0049e667 in QTimer::timeout (this=0x8ebb658) at .moc/release-shared/moc_qtimer.cpp:128
#26 0x004699ae in QTimer::timerEvent (this=0x8ebb658, e=0xbfcc0f70) at kernel/qtimer.cpp:261
#27 0x0045e3bf in QObject::event (this=0x8ebb658, e=0xbfcc0f70) at kernel/qobject.cpp:1075
#28 0x03759f54 in QApplicationPrivate::notify_helper (this=0x8c1f368, receiver=0x8ebb658, e=0xbfcc0f70) at kernel/qapplication.cpp:4056
#29 0x0376167c in QApplication::notify (this=0x8c19558, receiver=0x8ebb658, e=0xbfcc0f70) at kernel/qapplication.cpp:3603
#30 0x010acbfa in KApplication::notify (this=0x8c19558, receiver=0x8ebb658, event=0xbfcc0f70) at ../../kdeui/kernel/kapplication.cpp:302
#31 0x0044e6cb in QCoreApplication::notifyInternal (this=0x8c19558, receiver=0x8ebb658, event=0xbfcc0f70) at kernel/qcoreapplication.cpp:610
#32 0x0047b7ce in QCoreApplication::sendEvent (this=0x8c21f34) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#33 QTimerInfoList::activateTimers (this=0x8c21f34) at kernel/qeventdispatcher_unix.cpp:572
#34 0x004790e0 in timerSourceDispatch (source=0x8c21f00) at kernel/qeventdispatcher_glib.cpp:165
#35 0x0025fe78 in g_main_dispatch (context=0x8c21490) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:1960
#36 IA__g_main_context_dispatch (context=0x8c21490) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:2513
#37 0x00263720 in g_main_context_iterate (context=0x8c21490, block=<value optimized out>, dispatch=1, self=0x8c1ee70) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:2591
#38 0x00263853 in IA__g_main_context_iteration (context=0x8c21490, may_block=1) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:2654
#39 0x0047902c in QEventDispatcherGlib::processEvents (this=0x8c1f158, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#40 0x037fabe5 in QGuiEventDispatcherGlib::processEvents (this=0x8c1f158, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#41 0x0044cc79 in QEventLoop::processEvents (this=0xbfcc1234, flags=) at kernel/qeventloop.cpp:149
#42 0x0044d0ca in QEventLoop::exec (this=0xbfcc1234, flags=...) at kernel/qeventloop.cpp:201
#43 0x0044f53f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#44 0x03759dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#45 0x062c080d in kdemain (argc=1, argv=0x8be2f48) at ../../../../plasma/shells/desktop/main.cpp:50
#46 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x8bbf5c0 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#47 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#48 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#49 0x0804fbaf in main (argc=2, argv=0xbfcc1a94, envp=0xbfcc1aa0) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 217209

Reported using DrKonqi