Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.95 (KDE 4.2.95 (KDE 4.3 RC1))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-13-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Plasma-desktop crashes when some windows use the kwin explode effect. Nvidia card 9500gt

It appears to be random windows that maybe crash or error out, then plasma-desktop can't handle the crashed applications state, and plasma crashes? Maybe 75-85% of the time everything is stable. Resizing windows is choppy but that is known for Nvidia drivers?

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 29906)]

Thread 2 (Thread 0x7f2522bab950 (LWP 29907)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f2545801939 in QWaitCondition::wait (this=0x1c58cc0, mutex=0x1c58cb8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f254467e4cc in QHostInfoAgent::run (this=0x1c58ca0) at kernel/qhostinfo.cpp:260
#3  0x00007f2545800952 in QThreadPrivate::start (arg=0x1c58ca0) at thread/qthread_unix.cpp:189
#4  0x00007f25416823ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f2542266fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2545dd1750 (LWP 29906)):
[KCrash Handler]
#5  TaskManager::GroupManager::manualSortingRequest (this=0x0, taskItem=0x5867ce0, newIndex=3) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:363
#6  0x00007f25285c9b3a in TaskManager::AbstractGroupingStrategy::closeGroup (this=0x5956200, group=0x5576970)
    at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/abstractgroupingstrategy.cpp:167
#7  0x00007f25285d0da8 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0x5956200) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/strategies/programgroupingstrategy.cpp:204
#8  0x00007f25285d1c2d in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0x5956200, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/programgroupingstrategy.moc:68
#9  0x00007f25458ff1f2 in QMetaObject::activate (sender=0x5576970, from_signal_index=<value optimized out>, to_signal_index=22, argv=0x1) at kernel/qobject.cpp:3069
#10 0x00007f25285e2a92 in TaskManager::TaskGroup::itemRemoved (this=0x0, _t1=0x5564e50) at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/taskgroup.moc:146
#11 0x00007f25285e33b1 in TaskManager::TaskGroup::remove (this=0x5576970, item=0x5564e50) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskgroup.cpp:182
#12 0x00007f25285cbed1 in TaskManager::GroupManagerPrivate::removeTask (this=0x1c5e350, task={d = 0x7fff4ddff1e0}) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:311
#13 0x00007f25285ce51d in TaskManager::GroupManager::qt_metacall (this=0x1c8a240, _c=<value optimized out>, _id=<value optimized out>, _a=0x7fff4ddff320)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/groupmanager.moc:105
#14 0x00007f25458ff1f2 in QMetaObject::activate (sender=0x1c798c0, from_signal_index=<value optimized out>, to_signal_index=5, argv=0x1) at kernel/qobject.cpp:3069
#15 0x00007f25285e5f35 in TaskManager::TaskManager::taskRemoved (this=0x0, _t1=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/taskmanager.moc:162
#16 0x00007f25285e756e in TaskManager::TaskManager::windowRemoved (this=0x1c798c0, w=52453543) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskmanager.cpp:279
#17 0x00007f25285e92bf in TaskManager::TaskManager::qt_metacall (this=0x1c798c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4ddff540)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/taskmanager.moc:110
#18 0x00007f25458ff1f2 in QMetaObject::activate (sender=0x180de90, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x1) at kernel/qobject.cpp:3069
#19 0x00007f25440e3ab2 in KWindowSystem::windowRemoved (this=0x0, _t1=52453543) at /build/buildd/kde4libs-4.2.95/obj-x86_64-linux-gnu/kdeui/kwindowsystem.moc:127
#20 0x00007f25440e5ffb in KWindowSystemPrivate::removeClient (this=0x17b52a0, w=52453543) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#21 0x00007f25440f5030 in NETRootInfo::update (this=0x17b52c8, dirty_props=<value optimized out>) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2131
#22 0x00007f25440f536b in NETRootInfo::event (this=0x17b52c8, event=<value optimized out>, properties=0x7fff4ddff830, properties_size=5)
    at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#23 0x00007f25440e62cb in KWindowSystemPrivate::x11Event (this=0x17b52a0, ev=0x7fff4de00220) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#24 0x00007f2543fb5a43 in KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff4de00220) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#25 0x00007f25396cdb57 in PlasmaApp::x11EventFilter (this=0x15d90f0, event=0x7fff4de00220) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/plasmaapp.cpp:490
#26 0x00007f2542ecfb1f in qt_x11EventFilter (ev=0x7fff4de00220) at kernel/qapplication_x11.cpp:375
#27 0x00007f2542ee2faf in QApplication::x11ProcessEvent (this=0x15d90f0, event=0x7fff4de00220) at kernel/qapplication_x11.cpp:3273
#28 0x00007f2542f0c464 in x11EventSourceDispatch (s=0x161e1e0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#29 0x00007f25418d120a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0x00007f25418d48e0 in ?? () from /usr/lib/libglib-2.0.so.0
#31 0x00007f25418d4a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0x00007f2545912e6f in QEventDispatcherGlib::processEvents (this=0x1619770, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#33 0x00007f2542f0bbef in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#34 0x00007f25458e8002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 1306526992}) at kernel/qeventloop.cpp:149
#35 0x00007f25458e83cd in QEventLoop::exec (this=0x7fff4de00550, flags={i = 1306527072}) at kernel/qeventloop.cpp:200
#36 0x00007f25458ea694 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#37 0x00007f25396ba63b in kdemain (argc=1, argv=0x15ceb80) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/main.cpp:50
#38 0x000000000040714e in launch (argc=1, _name=0x15e61f8 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x15e6218 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a309 "0") at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:672
#39 0x0000000000407978 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1164
#40 0x0000000000407f25 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1357
#41 0x0000000000408a66 in main (argc=2, argv=0x7fff4de013e8, envp=0x7fff4de01400) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

This bug may be a duplicate of or related to bug 199299

Reported using DrKonqi