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

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 0 (LWP 23052)]

Thread 2 (Thread 0x7ff142739950 (LWP 23065)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007ff161a7d939 in QWaitCondition::wait (this=0x26a15a0, mutex=0x26a1598, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007ff1650414cc in QHostInfoAgent::run (this=0x26a1580) at kernel/qhostinfo.cpp:260
#3  0x00007ff161a7c952 in QThreadPrivate::start (arg=0x26a1580) at thread/qthread_unix.cpp:189
#4  0x00007ff15e17d3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007ff160fd9fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ff16672d760 (LWP 23052)):
[KCrash Handler]
#5  TaskManager::GroupManager::manualSortingRequest (this=0x0, taskItem=0x15ec670, newIndex=3) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:363
#6  0x00007ff149691b3a in TaskManager::AbstractGroupingStrategy::closeGroup (this=0x1f509d0, group=0x31d6a60)
    at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/abstractgroupingstrategy.cpp:167
#7  0x00007ff149698da8 in TaskManager::ProgramGroupingStrategy::checkGroup (this=0x1f509d0) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/strategies/programgroupingstrategy.cpp:204
#8  0x00007ff149699c2d in TaskManager::ProgramGroupingStrategy::qt_metacall (this=0x1f509d0, _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  0x00007ff161b7b1f2 in QMetaObject::activate (sender=0x31d6a60, from_signal_index=<value optimized out>, to_signal_index=22, argv=0x1) at kernel/qobject.cpp:3069
#10 0x00007ff1496aaa92 in TaskManager::TaskGroup::itemRemoved (this=0x0, _t1=0x2d4e0e0) at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/taskgroup.moc:146
#11 0x00007ff1496ab3b1 in TaskManager::TaskGroup::remove (this=0x31d6a60, item=0x2d4e0e0) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskgroup.cpp:182
#12 0x00007ff149693ed1 in TaskManager::GroupManagerPrivate::removeTask (this=0x1ac5410, task={d = 0x7fff6e778630}) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/groupmanager.cpp:311
#13 0x00007ff14969651d in TaskManager::GroupManager::qt_metacall (this=0x1ac53e0, _c=<value optimized out>, _id=<value optimized out>, _a=0x7fff6e778770)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/groupmanager.moc:105
#14 0x00007ff161b7b1f2 in QMetaObject::activate (sender=0x1ac5510, from_signal_index=<value optimized out>, to_signal_index=5, argv=0x1) at kernel/qobject.cpp:3069
#15 0x00007ff1496adf35 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 0x00007ff1496af56e in TaskManager::TaskManager::windowRemoved (this=0x1ac5510, w=68823989) at /build/buildd/kdebase-workspace-4.2.95/libs/taskmanager/taskmanager.cpp:279
#17 0x00007ff1496b12bf in TaskManager::TaskManager::qt_metacall (this=0x1ac5510, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff6e778990)
    at /build/buildd/kdebase-workspace-4.2.95/obj-x86_64-linux-gnu/libs/taskmanager/taskmanager.moc:110
#18 0x00007ff161b7b1f2 in QMetaObject::activate (sender=0x16a1a60, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x1) at kernel/qobject.cpp:3069
#19 0x00007ff164aa6ab2 in KWindowSystem::windowRemoved (this=0x0, _t1=68823989) at /build/buildd/kde4libs-4.2.95/obj-x86_64-linux-gnu/kdeui/kwindowsystem.moc:127
#20 0x00007ff164aa8ffb in KWindowSystemPrivate::removeClient (this=0x16a1cf0, w=68823989) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#21 0x00007ff164ab7fe1 in NETRootInfo::update (this=0x16a1d18, dirty_props=<value optimized out>) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2135
#22 0x00007ff164ab836b in NETRootInfo::event (this=0x16a1d18, event=<value optimized out>, properties=0x7fff6e778c80, properties_size=5)
    at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#23 0x00007ff164aa92cb in KWindowSystemPrivate::x11Event (this=0x16a1cf0, ev=0x7fff6e779670) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#24 0x00007ff164978a43 in KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff6e779670) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#25 0x00007ff166326b57 in PlasmaApp::x11EventFilter (this=0x14b8be0, event=0x7fff6e779670) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/plasmaapp.cpp:490
#26 0x00007ff162306b1f in qt_x11EventFilter (ev=0x7fff6e779670) at kernel/qapplication_x11.cpp:375
#27 0x00007ff162319faf in QApplication::x11ProcessEvent (this=0x14b8be0, event=0x7fff6e779670) at kernel/qapplication_x11.cpp:3273
#28 0x00007ff162343464 in x11EventSourceDispatch (s=0x14d37c0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#29 0x00007ff15c54d20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0x00007ff15c5508e0 in ?? () from /usr/lib/libglib-2.0.so.0
#31 0x00007ff15c550a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0x00007ff161b8ee6f in QEventDispatcherGlib::processEvents (this=0x14a05f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#33 0x00007ff162342bef in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#34 0x00007ff161b64002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 1853331808}) at kernel/qeventloop.cpp:149
#35 0x00007ff161b643cd in QEventLoop::exec (this=0x7fff6e7799a0, flags={i = 1853331888}) at kernel/qeventloop.cpp:200
#36 0x00007ff161b66694 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#37 0x00007ff16631363b in kdemain (argc=1, argv=0x7fff6e779ca8) at /build/buildd/kdebase-workspace-4.2.95/plasma/shells/desktop/main.cpp:50
#38 0x00007ff160f125a6 in __libc_start_main (main=0x400890 <main>, argc=1, ubp_av=0x7fff6e779ca8, init=0x4008c0 <__libc_csu_init>, fini=<value optimized out>, rtld_fini=<value optimized out>, 
    stack_end=0x7fff6e779c98) at libc-start.c:220
#39 0x00000000004007c9 in _start () at ../sysdeps/x86_64/elf/start.S:113

Reported using DrKonqi