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 2.6.28-16-generic i686
Distribution: Ubuntu 9.04

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3857)]

Thread 3 (Thread 0xa92f1b90 (LWP 3858)):
#0  0xb7fca430 in __kernel_vsyscall ()
#1  0xb64e00e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66c02ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7dc7172 in QWaitCondition::wait (this=0x8d811d0, mutex=0x8d811cc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7703ac2 in QHostInfoAgent::run (this=0x8d811c0) at kernel/qhostinfo.cpp:260
#5  0xb7dc6132 in QThreadPrivate::start (arg=0x8d811c0) at thread/qthread_unix.cpp:188
#6  0xb64dc4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66b149e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa3298b90 (LWP 12501)):
#0  0xb7fca430 in __kernel_vsyscall ()
#1  0xb64e0412 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66c0344 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7dc5b29 in thread_sleep (ti=0xa32982b0) at thread/qthread_unix.cpp:297
#4  0xb7dc5c5b in QThread::msleep (msecs=<value optimized out>) at thread/qthread_unix.cpp:323
#5  0xa93480c8 in ?? () from /usr/lib/kde4/plasma_applet_cwp.so
#6  0xb7dc6132 in QThreadPrivate::start (arg=0x9df0e88) at thread/qthread_unix.cpp:188
#7  0xb64dc4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0xb66b149e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5fe9a10 (LWP 3857)):
[KCrash Handler]
#6  AbstractTaskItem::basicPreferredSize (this=0x8f46b10) at /build/buildd/kdebase-workspace-4.3.2/plasma/applets/tasks/tasks.h:92
#7  0xa95446c1 in TaskItemLayout::preferredColumns (this=0x8ee1270) at /build/buildd/kdebase-workspace-4.3.2/plasma/applets/tasks/taskitemlayout.cpp:206
#8  0xa95450ed in TaskItemLayout::gridLayoutSize (this=0x8ee1270) at /build/buildd/kdebase-workspace-4.3.2/plasma/applets/tasks/taskitemlayout.cpp:222
#9  0xa95451ab in TaskItemLayout::layoutItems (this=0x8ee1270) at /build/buildd/kdebase-workspace-4.3.2/plasma/applets/tasks/taskitemlayout.cpp:245
#10 0xa9545b94 in TaskItemLayout::remove (this=0x8ee1270, item=0x9bb3428) at /build/buildd/kdebase-workspace-4.3.2/plasma/applets/tasks/taskitemlayout.cpp:136
#11 0xa9545c4c in TaskItemLayout::removeTaskItem (this=0x8ee1270, item=0x9bb3428) at /build/buildd/kdebase-workspace-4.3.2/plasma/applets/tasks/taskitemlayout.cpp:93
#12 0xa9551b36 in TaskGroupItem::itemRemoved (this=0x8ee3270, groupableItem=0xa540300) at /build/buildd/kdebase-workspace-4.3.2/plasma/applets/tasks/taskgroupitem.cpp:521
#13 0xa9553076 in TaskGroupItem::qt_metacall (this=0x8ee3270, _c=QMetaObject::InvokeMetaMethod, _id=15, _a=0xbf8a69ac)
    at /build/buildd/kdebase-workspace-4.3.2/obj-i486-linux-gnu/plasma/applets/tasks/taskgroupitem.moc:114
#14 0xb7ed01b8 in QMetaObject::activate (sender=0x8ee15e0, from_signal_index=22, to_signal_index=22, argv=0xbf8a69ac) at kernel/qobject.cpp:3113
#15 0xb7ed0e42 in QMetaObject::activate (sender=0x8ee15e0, m=0xa9517b74, local_signal_index=1, argv=0xbf8a69ac) at kernel/qobject.cpp:3187
#16 0xa9508aa3 in TaskManager::TaskGroup::itemRemoved (this=0x8ee15e0, _t1=0xa540300) at /build/buildd/kdebase-workspace-4.3.2/obj-i486-linux-gnu/libs/taskmanager/taskgroup.moc:152
#17 0xa95094cb in TaskManager::TaskGroup::remove (this=0x8ee15e0, item=0xa540300) at /build/buildd/kdebase-workspace-4.3.2/libs/taskmanager/taskgroup.cpp:189
#18 0xa94f08bd in TaskManager::GroupManagerPrivate::removeTask (this=0x8ee5a58, task={d = 0xbf8a6a6c}) at /build/buildd/kdebase-workspace-4.3.2/libs/taskmanager/groupmanager.cpp:311
#19 0xa94f221a in TaskManager::GroupManager::qt_metacall (this=0x8bca408, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbf8a6b4c)
    at /build/buildd/kdebase-workspace-4.3.2/obj-i486-linux-gnu/libs/taskmanager/groupmanager.moc:105
#20 0xb7ed01b8 in QMetaObject::activate (sender=0x8bad458, from_signal_index=5, to_signal_index=5, argv=0xbf8a6b4c) at kernel/qobject.cpp:3113
#21 0xb7ed0e42 in QMetaObject::activate (sender=0x8bad458, m=0xa9517d3c, local_signal_index=1, argv=0xbf8a6b4c) at kernel/qobject.cpp:3187
#22 0xa950c573 in TaskManager::TaskManager::taskRemoved (this=0x8bad458, _t1={d = 0xbf8a6b94}) at /build/buildd/kdebase-workspace-4.3.2/obj-i486-linux-gnu/libs/taskmanager/taskmanager.moc:162
#23 0xa950de1f in TaskManager::TaskManager::windowRemoved (this=0x8bad458, w=73400345) at /build/buildd/kdebase-workspace-4.3.2/libs/taskmanager/taskmanager.cpp:279
#24 0xa950fd3c in TaskManager::TaskManager::qt_metacall (this=0x8bad458, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbf8a6cbc)
    at /build/buildd/kdebase-workspace-4.3.2/obj-i486-linux-gnu/libs/taskmanager/taskmanager.moc:110
#25 0xb7ed01b8 in QMetaObject::activate (sender=0x8b07ca8, from_signal_index=6, to_signal_index=6, argv=0xbf8a6cbc) at kernel/qobject.cpp:3113
#26 0xb7ed0e42 in QMetaObject::activate (sender=0x8b07ca8, m=0xb763c24c, local_signal_index=2, argv=0xbf8a6cbc) at kernel/qobject.cpp:3187
#27 0xb75d3073 in KWindowSystem::windowRemoved (this=0x8b07ca8, _t1=73400345) at /build/buildd/kde4libs-4.3.2/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#28 0xb75d58f6 in KWindowSystemPrivate::removeClient (this=0x8955788, w=73400345) at /build/buildd/kde4libs-4.3.2/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#29 0xb75e479d in NETRootInfo::update (this=0x895579c, dirty_props=0xbf8a6e24) at /build/buildd/kde4libs-4.3.2/kdeui/windowmanagement/netwm.cpp:2183
#30 0xb75e549f in NETRootInfo::event (this=0x895579c, event=0xbf8a858c, properties=0xbf8a6f08, properties_size=5) at /build/buildd/kde4libs-4.3.2/kdeui/windowmanagement/netwm.cpp:2058
#31 0xb75d5b8d in KWindowSystemPrivate::x11Event (this=0x8955788, ev=0xbf8a852c) at /build/buildd/kde4libs-4.3.2/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#32 0xb74867b9 in KApplication::x11EventFilter (this=0x887ca88, _event=0xbf8a852c) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:911
#33 0xb4b50c17 in PlasmaApp::x11EventFilter (this=0x887ca88, event=0xbf8a852c) at /build/buildd/kdebase-workspace-4.3.2/plasma/shells/desktop/plasmaapp.cpp:490
#34 0xb69d9e5e in qt_x11EventFilter (ev=0xbf8a852c) at kernel/qapplication_x11.cpp:375
#35 0xb69ec6df in QApplication::x11ProcessEvent (this=0x887ca88, event=0xbf8a852c) at kernel/qapplication_x11.cpp:3271
#36 0xb6a1937a in x11EventSourceDispatch (s=0x8885400, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#37 0xb6529b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#38 0xb652d0eb in ?? () from /usr/lib/libglib-2.0.so.0
#39 0xb652d268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#40 0xb7ee62f8 in QEventDispatcherGlib::processEvents (this=0x8882260, flags={i = -1081440536}) at kernel/qeventdispatcher_glib.cpp:327
#41 0xb6a18a75 in QGuiEventDispatcherGlib::processEvents (this=0x8882260, flags={i = -1081440488}) at kernel/qguieventdispatcher_glib.cpp:202
#42 0xb7eb91fa in QEventLoop::processEvents (this=0xbf8a8790, flags={i = -1081440424}) at kernel/qeventloop.cpp:149
#43 0xb7eb9642 in QEventLoop::exec (this=0xbf8a8790, flags={i = -1081440360}) at kernel/qeventloop.cpp:201
#44 0xb7ebbae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#45 0xb6976bb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#46 0xb4b3b2f0 in kdemain (argc=1, argv=0x8856540) at /build/buildd/kdebase-workspace-4.3.2/plasma/shells/desktop/main.cpp:50
#47 0x0804e27d in launch (argc=1, _name=0x881b57c "/usr/bin/plasma-desktop", args=0x881b594 "", cwd=0x0, envc=0, envs=0x881b598 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805136d "0") at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:677
#48 0x0804ea5d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:1169
#49 0x0804efe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:1362
#50 0x0804fbca in main (argc=2, argv=0xbf8a8f84, envp=0xbf8a8f90) at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:1793

Reported using DrKonqi