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 i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
d

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3848)]

Thread 2 (Thread 0xa8503b90 (LWP 3853)):
#0  0xb80c1430 in __kernel_vsyscall ()
#1  0xb658a0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb676a2ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7ebd9b2 in QWaitCondition::wait (this=0x9608ce0, mutex=0x9608cdc, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb77f9152 in QHostInfoAgent::run (this=0x9608cd0) at kernel/qhostinfo.cpp:260
#5  0xb7ebc96e in QThreadPrivate::start (arg=0x9608cd0) at thread/qthread_unix.cpp:189
#6  0xb65864ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb675b49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb6094a10 (LWP 3848)):
[KCrash Handler]
#6  0xa879432a in TaskManager::GroupManager::manualSortingRequest () from /usr/lib/libtaskmanager.so.4
#7  0xa879231b in TaskManager::AbstractGroupingStrategy::closeGroup () from /usr/lib/libtaskmanager.so.4
#8  0xa8799f27 in ?? () from /usr/lib/libtaskmanager.so.4
#9  0xa879ae5b in ?? () from /usr/lib/libtaskmanager.so.4
#10 0xb7fc6ca8 in QMetaObject::activate (sender=0xa103a58, from_signal_index=22, to_signal_index=22, argv=0xbfcdc28c) at kernel/qobject.cpp:3069
#11 0xb7fc7932 in QMetaObject::activate (sender=0xa103a58, m=0xa87bcb74, local_signal_index=1, argv=0xbfcdc28c) at kernel/qobject.cpp:3143
#12 0xa87add83 in TaskManager::TaskGroup::itemRemoved () from /usr/lib/libtaskmanager.so.4
#13 0xa87ae7ab in TaskManager::TaskGroup::remove () from /usr/lib/libtaskmanager.so.4
#14 0xa8794ba5 in ?? () from /usr/lib/libtaskmanager.so.4
#15 0xa879746a in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#16 0xb7fc6ca8 in QMetaObject::activate (sender=0x91923c8, from_signal_index=5, to_signal_index=5, argv=0xbfcdc41c) at kernel/qobject.cpp:3069
#17 0xb7fc7932 in QMetaObject::activate (sender=0x91923c8, m=0xa87bcd3c, local_signal_index=1, argv=0xbfcdc41c) at kernel/qobject.cpp:3143
#18 0xa87b1823 in TaskManager::TaskManager::taskRemoved () from /usr/lib/libtaskmanager.so.4
#19 0xa87b30cf in TaskManager::TaskManager::windowRemoved () from /usr/lib/libtaskmanager.so.4
#20 0xa87b4fec in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#21 0xb7fc6ca8 in QMetaObject::activate (sender=0x902b300, from_signal_index=6, to_signal_index=6, argv=0xbfcdc58c) at kernel/qobject.cpp:3069
#22 0xb7fc7932 in QMetaObject::activate (sender=0x902b300, m=0xb772f26c, local_signal_index=2, argv=0xbfcdc58c) at kernel/qobject.cpp:3143
#23 0xb76c7853 in KWindowSystem::windowRemoved (this=0x902b300, _t1=31502114) at /build/buildd/kde4libs-4.2.95/obj-i486-linux-gnu/kdeui/kwindowsystem.moc:127
#24 0xb76ca0d6 in KWindowSystemPrivate::removeClient (this=0x8fca7e8, w=31502114) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:249
#25 0xb76d9753 in NETRootInfo::update (this=0x8fca7fc, dirty_props=0xbfcdc6d4) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2135
#26 0xb76d9b3f in NETRootInfo::event (this=0x8fca7fc, event=0xbfcdcdec, properties=0xbfcdc7b8, properties_size=5) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/netwm.cpp:2058
#27 0xb76ca36d in KWindowSystemPrivate::x11Event (this=0x8fca7e8, ev=0xbfcdcd8c) at /build/buildd/kde4libs-4.2.95/kdeui/windowmanagement/kwindowsystem_x11.cpp:136
#28 0xb757a6f9 in KApplication::x11EventFilter (this=0x8eefd00, _event=0xbfcdcd8c) at /build/buildd/kde4libs-4.2.95/kdeui/kernel/kapplication.cpp:911
#29 0xb3ca3e37 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0xb6aa3f3e in qt_x11EventFilter (ev=0xbfcdcd8c) at kernel/qapplication_x11.cpp:375
#31 0xb6ab66a8 in QApplication::x11ProcessEvent (this=0x8eefd00, event=0xbfcdcd8c) at kernel/qapplication_x11.cpp:3273
#32 0xb6ae2c6a in x11EventSourceDispatch (s=0x8ef8a00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb65d3b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb65d70eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb65d7268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb7fdc438 in QEventDispatcherGlib::processEvents (this=0x8ef34c8, flags={i = -1077031096}) at kernel/qeventdispatcher_glib.cpp:323
#37 0xb6ae2365 in QGuiEventDispatcherGlib::processEvents (this=0x8ef34c8, flags={i = -1077031048}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7faf06a in QEventLoop::processEvents (this=0xbfcdcff0, flags={i = -1077030984}) at kernel/qeventloop.cpp:149
#39 0xb7faf4aa in QEventLoop::exec (this=0xbfcdcff0, flags={i = -1077030920}) at kernel/qeventloop.cpp:200
#40 0xb7fb1959 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#41 0xb6a40d17 in QApplication::exec () at kernel/qapplication.cpp:3553
#42 0xb3c8e510 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804e1c0 in launch (argc=1, _name=0x8ebd33c "/usr/bin/plasma-desktop", args=0x8ebd354 "", cwd=0x0, envc=0, envs=0x8ebd358 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80512d1 "0") at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:672
#44 0x0804e99d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1164
#45 0x0804ef25 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1357
#46 0x0804fb0a in main (argc=2, argv=0xbfcdd7e4, envp=0xbfcdd7f0) at /build/buildd/kde4libs-4.2.95/kinit/kinit.cpp:1784

Reported using DrKonqi