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 2.6.28-15-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Trying to close programme instances caused a plasma crash. 

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 6651)]

Thread 2 (Thread 0xa8443b90 (LWP 6652)):
#0  0xb801f430 in __kernel_vsyscall ()
#1  0xb65340e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb67142ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e16172 in QWaitCondition::wait (this=0x9029f08, mutex=0x9029f04, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7756ac2 in QHostInfoAgent::run (this=0x9029ef8) at kernel/qhostinfo.cpp:260
#5  0xb7e15132 in QThreadPrivate::start (arg=0x9029ef8) at thread/qthread_unix.cpp:188
#6  0xb65304ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb670549e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb603ea10 (LWP 6651)):
[KCrash Handler]
#6  AbstractTaskItem::basicPreferredSize (this=0xa291e70) at /build/buildd/kdebase-workspace-4.3.0/plasma/applets/tasks/tasks.h:92
#7  0xa869d4d1 in TaskItemLayout::preferredColumns (this=0x92f8998) at /build/buildd/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:206
#8  0xa869defd in TaskItemLayout::gridLayoutSize (this=0x92f8998) at /build/buildd/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:222
#9  0xa869dfbb in TaskItemLayout::layoutItems (this=0x92f8998) at /build/buildd/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:245
#10 0xa869eba2 in TaskItemLayout::insert (this=0x92f8998, index=4, item=0xa3bfaf0) at /build/buildd/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:125
#11 0xa869ed97 in TaskItemLayout::addTaskItem (this=0x92f8998, item=0xa3bfaf0) at /build/buildd/kdebase-workspace-4.3.0/plasma/applets/tasks/taskitemlayout.cpp:82
#12 0xa86abae5 in TaskGroupItem::itemAdded (this=0x957cdc0, groupableItem=0x9ae1c10) at /build/buildd/kdebase-workspace-4.3.0/plasma/applets/tasks/taskgroupitem.cpp:477
#13 0xa86ac14c in TaskGroupItem::qt_metacall (this=0x957cdc0, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0xbf83ab4c)
    at /build/buildd/kdebase-workspace-4.3.0/obj-i486-linux-gnu/plasma/applets/tasks/taskgroupitem.moc:113
#14 0xb7f1f1b8 in QMetaObject::activate (sender=0x957c888, from_signal_index=21, to_signal_index=21, argv=0xbf83ab4c) at kernel/qobject.cpp:3113
#15 0xb7f1fe42 in QMetaObject::activate (sender=0x957c888, m=0xa8688b74, local_signal_index=0, argv=0xbf83ab4c) at kernel/qobject.cpp:3187
#16 0xa8679f23 in TaskManager::TaskGroup::itemAdded (this=0x957c888, _t1=0x9ae1c10) at /build/buildd/kdebase-workspace-4.3.0/obj-i486-linux-gnu/libs/taskmanager/taskgroup.moc:139
#17 0xa867ab85 in TaskManager::TaskGroup::add (this=0x957c888, item=0x9ae1c10) at /build/buildd/kdebase-workspace-4.3.0/libs/taskmanager/taskgroup.cpp:138
#18 0xa865e383 in TaskManager::AbstractGroupingStrategy::closeGroup (this=0xa25bec8, group=0x9a79a98) at /build/buildd/kdebase-workspace-4.3.0/libs/taskmanager/abstractgroupingstrategy.cpp:168
#19 0xa8666077 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0xa25bec8) at /build/buildd/kdebase-workspace-4.3.0/libs/taskmanager/strategies/programgroupingstrategy.cpp:204
#20 0xa8666fab in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0xa25bec8, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbf83ad2c)
    at /build/buildd/kdebase-workspace-4.3.0/obj-i486-linux-gnu/libs/taskmanager/programgroupingstrategy.moc:68
#21 0xb7f1f1b8 in QMetaObject::activate (sender=0x9a79a98, from_signal_index=22, to_signal_index=22, argv=0xbf83ad2c) at kernel/qobject.cpp:3113
#22 0xb7f1fe42 in QMetaObject::activate (sender=0x9a79a98, m=0xa8688b74, local_signal_index=1, argv=0xbf83ad2c) at kernel/qobject.cpp:3187
#23 0xa8679ed3 in TaskManager::TaskGroup::itemRemoved (this=0x9a79a98, _t1=0xa324690) at /build/buildd/kdebase-workspace-4.3.0/obj-i486-linux-gnu/libs/taskmanager/taskgroup.moc:146
#24 0xa867a8fb in TaskManager::TaskGroup::remove (this=0x9a79a98, item=0xa324690) at /build/buildd/kdebase-workspace-4.3.0/libs/taskmanager/taskgroup.cpp:182
#25 0xa866181d in TaskManager::GroupManagerPrivate::removeTask (this=0x95e3938, task={d = 0xbf83adec}) at /build/buildd/kdebase-workspace-4.3.0/libs/taskmanager/groupmanager.cpp:311
#26 0xa866317a in TaskManager::GroupManager::qt_metacall (this=0x936fa80, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbf83aecc)
    at /build/buildd/kdebase-workspace-4.3.0/obj-i486-linux-gnu/libs/taskmanager/groupmanager.moc:105
#27 0xb7f1f1b8 in QMetaObject::activate (sender=0x92bf4c0, from_signal_index=5, to_signal_index=5, argv=0xbf83aecc) at kernel/qobject.cpp:3113
#28 0xb7f1fe42 in QMetaObject::activate (sender=0x92bf4c0, m=0xa8688d3c, local_signal_index=1, argv=0xbf83aecc) at kernel/qobject.cpp:3187
#29 0xa867d973 in TaskManager::TaskManager::taskRemoved (this=0x92bf4c0, _t1={d = 0xbf83af14}) at /build/buildd/kdebase-workspace-4.3.0/obj-i486-linux-gnu/libs/taskmanager/taskmanager.moc:162
#30 0xa867f21f in TaskManager::TaskManager::windowRemoved (this=0x92bf4c0, w=71303193) at /build/buildd/kdebase-workspace-4.3.0/libs/taskmanager/taskmanager.cpp:279
#31 0xa868113c in TaskManager::TaskManager::qt_metacall (this=0x92bf4c0, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbf83b03c)
    at /build/buildd/kdebase-workspace-4.3.0/obj-i486-linux-gnu/libs/taskmanager/taskmanager.moc:110
#32 0xb7f1f1b8 in QMetaObject::activate (sender=0x922a3d0, from_signal_index=6, to_signal_index=6, argv=0xbf83b03c) at kernel/qobject.cpp:3113
#33 0xb7f1fe42 in QMetaObject::activate (sender=0x922a3d0, m=0xb768f26c, local_signal_index=2, argv=0xbf83b03c) at kernel/qobject.cpp:3187
#34 0xb76275c3 in KWindowSystem::windowRemoved (this=0x922a3d0, _t1=71303193) at /build/buildd/kde4libs-4.3.0/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#35 0xb7629e46 in KWindowSystemPrivate::removeClient (this=0x9098b60, w=71303193) at /build/buildd/kde4libs-4.3.0/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#36 0xb7638ced in NETRootInfo::update (this=0x9098b74, dirty_props=0xbf83b1a4) at /build/buildd/kde4libs-4.3.0/kdeui/windowmanagement/netwm.cpp:2183
#37 0xb76399ef in NETRootInfo::event (this=0x9098b74, event=0xbf83c90c, properties=0xbf83b288, properties_size=5) at /build/buildd/kde4libs-4.3.0/kdeui/windowmanagement/netwm.cpp:2058
#38 0xb762a0dd in KWindowSystemPrivate::x11Event (this=0x9098b60, ev=0xbf83c8ac) at /build/buildd/kde4libs-4.3.0/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#39 0xb74da8e9 in KApplication::x11EventFilter (this=0x8fb5778, _event=0xbf83c8ac) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:911
#40 0xb3c42a47 in PlasmaApp::x11EventFilter (this=0x8fb5778, event=0xbf83c8ac) at /build/buildd/kdebase-workspace-4.3.0/plasma/shells/desktop/plasmaapp.cpp:490
#41 0xb6a2de5e in qt_x11EventFilter (ev=0xbf83c8ac) at kernel/qapplication_x11.cpp:375
#42 0xb6a406df in QApplication::x11ProcessEvent (this=0x8fb5778, event=0xbf83c8ac) at kernel/qapplication_x11.cpp:3271
#43 0xb6a6d37a in x11EventSourceDispatch (s=0x8fbe268, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#44 0xb657db88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#45 0xb65810eb in ?? () from /usr/lib/libglib-2.0.so.0
#46 0xb6581268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#47 0xb7f352f8 in QEventDispatcherGlib::processEvents (this=0x8fbaf78, flags={i = -1081882008}) at kernel/qeventdispatcher_glib.cpp:327
#48 0xb6a6ca75 in QGuiEventDispatcherGlib::processEvents (this=0x8fbaf78, flags={i = -1081881960}) at kernel/qguieventdispatcher_glib.cpp:202
#49 0xb7f081fa in QEventLoop::processEvents (this=0xbf83cb10, flags={i = -1081881896}) at kernel/qeventloop.cpp:149
#50 0xb7f08642 in QEventLoop::exec (this=0xbf83cb10, flags={i = -1081881832}) at kernel/qeventloop.cpp:201
#51 0xb7f0aae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#52 0xb69cabb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#53 0xb3c2d120 in kdemain (argc=1, argv=0x8f82fc0) at /build/buildd/kdebase-workspace-4.3.0/plasma/shells/desktop/main.cpp:50
#54 0x0804e27d in launch (argc=1, _name=0x8f3e57c "/usr/bin/plasma-desktop", args=0x8f3e594 "", cwd=0x0, envc=0, envs=0x8f3e598 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805136d "0") at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:676
#55 0x0804ea5d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1168
#56 0x0804efe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1361
#57 0x0804fbca in main (argc=2, argv=0xbf83d304, envp=0xbf83d310) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1788

Reported using DrKonqi