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:
I was closing an ark file and plasma desktop crashed triggering the automatic crash report.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77dc700 (LWP 1710))]

Thread 2 (Thread 0xac0b1b70 (LWP 1712)):
#0  0x00b5b422 in __kernel_vsyscall ()
#1  0x003ffe15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00a8f78d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x007d2e67 in QWaitConditionPrivate::wait (this=0x9d5f080, mutex=0x9d5f07c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x9d5f080, mutex=0x9d5f07c, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x00c01922 in QHostInfoAgent::run (this=0x9d5f070) at kernel/qhostinfo.cpp:260
#6  0x007d1e32 in QThreadPrivate::start (arg=0x9d5f070) at thread/qthread_unix.cpp:188
#7  0x003fb80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x00a827ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77dc700 (LWP 1710)):
[KCrash Handler]
#6  Tasks::itemTopMargin (this=0xa9037e0) at ../../../../plasma/applets/tasks/tasks.h:92
#7  AbstractTaskItem::basicPreferredSize (this=0xa9037e0) at ../../../../plasma/applets/tasks/abstracttaskitem.cpp:102
#8  0x024cf4eb in TaskItemLayout::preferredColumns (this=0x9932770) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:206
#9  0x024d023a in TaskItemLayout::gridLayoutSize (this=0x9932770) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:222
#10 0x024d02fb in TaskItemLayout::layoutItems (this=0x9932770) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:245
#11 0x024d0e2a in TaskItemLayout::insert (this=0x9932770, index=5, item=0xa8c45c8) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:125
#12 0x024d100f in TaskItemLayout::addTaskItem (this=0x9932770, item=0xa8c45c8) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:82
#13 0x024ddfa2 in TaskGroupItem::itemAdded (this=0x9de4560, groupableItem=0xa8c4930) at ../../../../plasma/applets/tasks/taskgroupitem.cpp:477
#14 0x024de627 in TaskGroupItem::qt_metacall (this=0x9de4560, _c=QMetaObject::InvokeMetaMethod, _id=29, _a=0xbfc8fe18) at ./taskgroupitem.moc:113
#15 0x008d8263 in QMetaObject::activate (sender=0x9dcf1d8, from_signal_index=21, to_signal_index=21, argv=0xbfc8fe18) at kernel/qobject.cpp:3113
#16 0x008d8ec2 in QMetaObject::activate (sender=0x9dcf1d8, m=0x44b0bf4, local_signal_index=0, argv=0xbfc8fe18) at kernel/qobject.cpp:3187
#17 0x044a2433 in TaskManager::TaskGroup::itemAdded (this=0x9dcf1d8, _t1=0xa8c4930) at ./taskgroup.moc:145
#18 0x044a2e8b in TaskManager::TaskGroup::add (this=0x9dcf1d8, item=0xa8c4930) at ../../../libs/taskmanager/taskgroup.cpp:138
#19 0x0448751e in TaskManager::AbstractGroupingStrategy::closeGroup (this=0xa1cf128, group=0xa901f60) at ../../../libs/taskmanager/abstractgroupingstrategy.cpp:168
#20 0x0448efec in TaskManager::ProgramGroupingStrategy::checkGroup (this=0xa1cf128) at ../../../libs/taskmanager/strategies/programgroupingstrategy.cpp:210
#21 0x0448ff4d in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0xa1cf128, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbfc90058) at ./programgroupingstrategy.moc:70
#22 0x008d8263 in QMetaObject::activate (sender=0xa901f60, from_signal_index=22, to_signal_index=22, argv=0xbfc90058) at kernel/qobject.cpp:3113
#23 0x008d8ec2 in QMetaObject::activate (sender=0xa901f60, m=0x44b0bf4, local_signal_index=1, argv=0xbfc90058) at kernel/qobject.cpp:3187
#24 0x044a23e3 in TaskManager::TaskGroup::itemRemoved (this=0xa901f60, _t1=0x9f97e08) at ./taskgroup.moc:152
#25 0x044a2c0b in TaskManager::TaskGroup::remove (this=0xa901f60, item=0x9f97e08) at ../../../libs/taskmanager/taskgroup.cpp:189
#26 0x0448a71d in TaskManager::GroupManagerPrivate::removeTask (this=0x98daa90, task=...) at ../../../libs/taskmanager/groupmanager.cpp:311
#27 0x0448c52b in TaskManager::GroupManager::qt_metacall (this=0x99cfa48, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbfc90238) at ./groupmanager.moc:105
#28 0x008d8263 in QMetaObject::activate (sender=0x99d4858, from_signal_index=5, to_signal_index=5, argv=0xbfc90238) at kernel/qobject.cpp:3113
#29 0x008d8ec2 in QMetaObject::activate (sender=0x99d4858, m=0x44b0dbc, local_signal_index=1, argv=0xbfc90238) at kernel/qobject.cpp:3187
#30 0x044a5e33 in TaskManager::TaskManager::taskRemoved (this=0x99d4858, _t1=...) at ./taskmanager.moc:162
#31 0x044a7bb2 in TaskManager::TaskManager::windowRemoved (this=0x99d4858, w=73400345) at ../../../libs/taskmanager/taskmanager.cpp:279
#32 0x044a94ff in TaskManager::TaskManager::qt_metacall (this=0x99d4858, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfc903b8) at ./taskmanager.moc:110
#33 0x008d8263 in QMetaObject::activate (sender=0x9808af0, from_signal_index=6, to_signal_index=6, argv=0xbfc903b8) at kernel/qobject.cpp:3113
#34 0x008d8ec2 in QMetaObject::activate (sender=0x9808af0, m=0x7bc226c, local_signal_index=2, argv=0xbfc903b8) at kernel/qobject.cpp:3187
#35 0x07b59dd3 in KWindowSystem::windowRemoved (this=0x9808af0, _t1=73400345) at ./kwindowsystem.moc:127
#36 0x07b5d036 in KWindowSystemPrivate::removeClient (this=0x9689608, w=73400345) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#37 0x07b6b53f in NETRootInfo::update (this=0x968961c, dirty_props=0xbfc90548) at ../../kdeui/windowmanagement/netwm.cpp:2183
#38 0x07b6c0b7 in NETRootInfo::event (this=0x968961c, event=<value optimized out>, properties=0xbfc90634, properties_size=5) at ../../kdeui/windowmanagement/netwm.cpp:2058
#39 0x07b5d2d1 in KWindowSystemPrivate::x11Event (this=0x9689608, ev=0xbfc91c3c) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#40 0x07a09f86 in KAppX11HackWidget::publicx11Event (this=0x95a5088, _event=0xbfc91c3c) at ../../kdeui/kernel/kapplication.cpp:911
#41 KApplication::x11EventFilter (this=0x95a5088, _event=0xbfc91c3c) at ../../kdeui/kernel/kapplication.cpp:961
#42 0x0127c71a in PlasmaApp::x11EventFilter (this=0x95a5088, event=0xbfc91c3c) at ../../../../plasma/shells/desktop/plasmaapp.cpp:490
#43 0x082a9d70 in qt_x11EventFilter (ev=0xbfc91c3c) at kernel/qapplication_x11.cpp:375
#44 0x082bb375 in QApplication::x11ProcessEvent (this=0x95a5088, event=0xbfc91c3c) at kernel/qapplication_x11.cpp:3271
#45 0x082e9502 in x11EventSourceDispatch (s=0x95ceb00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#46 0x00378e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#47 0x0037c720 in ?? () from /lib/libglib-2.0.so.0
#48 0x0037c853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#49 0x008ed02c in QEventDispatcherGlib::processEvents (this=0x95cbd10, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#50 0x082e8be5 in QGuiEventDispatcherGlib::processEvents (this=0x95cbd10, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#51 0x008c0c79 in QEventLoop::processEvents (this=0xbfc91f34, flags=) at kernel/qeventloop.cpp:149
#52 0x008c10ca in QEventLoop::exec (this=0xbfc91f34, flags=...) at kernel/qeventloop.cpp:201
#53 0x008c353f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#54 0x08247dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#55 0x0126680d in kdemain (argc=1, argv=0x95ba228) at ../../../../plasma/shells/desktop/main.cpp:50
#56 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x9591620 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#57 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#58 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#59 0x0804fbaf in main (argc=2, argv=0xbfc92794, envp=0xbfc927a0) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi