Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.96 (KDE 4.2.96 (KDE 4.3 RC2))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-13-generic x86_64
Distribution: Ubuntu 9.04

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 28760)]

Thread 2 (Thread 0x7f955339a950 (LWP 28763)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f9573c9b939 in QWaitCondition::wait (this=0x26dbc60, mutex=0x26dbc58, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f9572b174cc in QHostInfoAgent::run (this=0x26dbc40) at kernel/qhostinfo.cpp:260
#3  0x00007f9573c9a952 in QThreadPrivate::start (arg=0x26dbc40) at thread/qthread_unix.cpp:189
#4  0x00007f956fb1b3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f95706fffcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f957425b750 (LWP 28760)):
[KCrash Handler]
#5  AbstractTaskItem::basicPreferredSize (this=0x2890c40) at /build/buildd/kdebase-workspace-4.2.96/plasma/applets/tasks/tasks.h:92
#6  0x00007f9556630322 in TaskItemLayout::maximumRows (this=0x2606eb0) at /build/buildd/kdebase-workspace-4.2.96/plasma/applets/tasks/taskitemlayout.cpp:185
#7  0x00007f95566389f7 in TaskGroupItem::optimumCapacity (this=0x25d1cc0) at /build/buildd/kdebase-workspace-4.2.96/plasma/applets/tasks/taskgroupitem.cpp:1224
#8  0x00007f955662bc50 in Tasks::adjustGroupingStrategy (this=0x1fc6850) at /build/buildd/kdebase-workspace-4.2.96/plasma/applets/tasks/tasks.cpp:241
#9  0x00007f955662be68 in Tasks::constraintsEvent (this=0x1fc6850, constraints={i = 1886741800}) at /build/buildd/kdebase-workspace-4.2.96/plasma/applets/tasks/tasks.cpp:165
#10 0x00007f956b630839 in Plasma::Applet::flushPendingConstraintsEvents (this=0x1fc6850) at /build/buildd/kde4libs-4.2.96/plasma/applet.cpp:1160
#11 0x00007f956b630fb5 in Plasma::Applet::timerEvent (this=0x1fc6850, event=<value optimized out>) at /build/buildd/kde4libs-4.2.96/plasma/applet.cpp:2104
#12 0x00007f9573d934d3 in QObject::event (this=0x1fc6850, e=0x7f9570756528) at kernel/qobject.cpp:1082
#13 0x00007f957192174b in QGraphicsWidget::event (this=0x1fc6850, event=0x7fff7c297d40) at graphicsview/qgraphicswidget.cpp:1317
#14 0x00007f957130c78d in QApplicationPrivate::notify_helper (this=0x19e92c0, receiver=0x1fc6850, e=0x7fff7c297d40) at kernel/qapplication.cpp:4084
#15 0x00007f957131497a in QApplication::notify (this=0x19a8310, receiver=0x1fc6850, e=0x7fff7c297d40) at kernel/qapplication.cpp:4049
#16 0x00007f957244f63b in KApplication::notify (this=0x19a8310, receiver=0x1fc6850, event=0x7fff7c297d40) at /build/buildd/kde4libs-4.2.96/kdeui/kernel/kapplication.cpp:302
#17 0x00007f9573d8375c in QCoreApplication::notifyInternal (this=0x19a8310, receiver=0x1fc6850, event=0x7fff7c297d40) at kernel/qcoreapplication.cpp:602
#18 0x00007f9573db07f6 in QTimerInfoList::activateTimers (this=0x19ecb40) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#19 0x00007f9573dacf0d in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:164
#20 0x00007f956fd6a20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#21 0x00007f956fd6d8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#22 0x00007f956fd6da7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#23 0x00007f9573dace6f in QEventDispatcherGlib::processEvents (this=0x19e8bb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#24 0x00007f95713a4bef in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#25 0x00007f9573d82002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 2083094448}) at kernel/qeventloop.cpp:149
#26 0x00007f9573d823cd in QEventLoop::exec (this=0x7fff7c297ff0, flags={i = 2083094528}) at kernel/qeventloop.cpp:200
#27 0x00007f9573d84694 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#28 0x00007f9567b6f6bb in kdemain (argc=1, argv=0x199def0) at /build/buildd/kdebase-workspace-4.2.96/plasma/shells/desktop/main.cpp:50
#29 0x0000000000407215 in launch (argc=1, _name=0x199d7e8 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x199d808 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3c9 "0") at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:676
#30 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1168
#31 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1361
#32 0x0000000000408b26 in main (argc=2, argv=0x7fff7c298e98, envp=0x7fff7c298eb0) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1788

This bug may be a duplicate of or related to bug 199325

Reported using DrKonqi