Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic i686
Distribution: Ubuntu 9.04

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 4182)]

Thread 2 (Thread 0xa93a1b90 (LWP 4244)):
#0  0xb7f28430 in __kernel_vsyscall ()
#1  0xb643d0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb661d2ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7d23172 in QWaitCondition::wait (this=0x8f67d80, mutex=0x8f67d7c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb7660ac2 in QHostInfoAgent::run (this=0x8f67d70) at kernel/qhostinfo.cpp:260
#5  0xb7d22132 in QThreadPrivate::start (arg=0x8f67d70) at thread/qthread_unix.cpp:188
#6  0xb64394ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb660e49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5f46a10 (LWP 4182)):
[KCrash Handler]
#6  AbstractTaskItem::basicPreferredSize (this=0xa6556b8) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.h:92
#7  0xa964774c in TaskItemLayout::maximumRows (this=0x8cbaf60) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:185
#8  0xa9650ef4 in TaskGroupItem::optimumCapacity (this=0x8e54028) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskgroupitem.cpp:1224
#9  0xa9642508 in Tasks::adjustGroupingStrategy (this=0x8e7cfa8) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.cpp:241
#10 0xa964279c in Tasks::constraintsEvent (this=0x8e7cfa8, constraints={i = -1074515356}) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.cpp:165
#11 0xb5d99ce0 in Plasma::Applet::flushPendingConstraintsEvents (this=0x8e7cfa8) at /build/buildd/kde4libs-4.3.1/plasma/applet.cpp:1173
#12 0xb5d9a388 in Plasma::Applet::timerEvent (this=0x8e7cfa8, event=0xbff4375c) at /build/buildd/kde4libs-4.3.1/plasma/applet.cpp:2120
#13 0xb7e2716f in QObject::event (this=0x8e7cfa8, e=0xbff4375c) at kernel/qobject.cpp:1075
#14 0xb6f31627 in QGraphicsWidget::event (this=0x8e7cfa8, event=0xbff4375c) at graphicsview/qgraphicswidget.cpp:1340
#15 0xb68d3d3c in QApplicationPrivate::notify_helper (this=0x8b8a6a0, receiver=0x8e7cfa8, e=0xbff4375c) at kernel/qapplication.cpp:4056
#16 0xb68dc03e in QApplication::notify (this=0x8b84bc0, receiver=0x8e7cfa8, e=0xbff4375c) at kernel/qapplication.cpp:3603
#17 0xb73e485d in KApplication::notify (this=0x8b84bc0, receiver=0x8e7cfa8, event=0xbff4375c) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#18 0xb7e16bcb in QCoreApplication::notifyInternal (this=0x8b84bc0, receiver=0x8e7cfa8, event=0xbff4375c) at kernel/qcoreapplication.cpp:610
#19 0xb7e45d51 in QTimerInfoList::activateTimers (this=0x8b8d634) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 0xb7e423a0 in timerSourceDispatch (source=0x8b8d600) at kernel/qeventdispatcher_glib.cpp:165
#21 0xb6486b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#22 0xb648a0eb in ?? () from /usr/lib/libglib-2.0.so.0
#23 0xb648a268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#24 0xb7e422f8 in QEventDispatcherGlib::processEvents (this=0x8b87f70, flags={i = -1074513704}) at kernel/qeventdispatcher_glib.cpp:327
#25 0xb6975a75 in QGuiEventDispatcherGlib::processEvents (this=0x8b87f70, flags={i = -1074513656}) at kernel/qguieventdispatcher_glib.cpp:202
#26 0xb7e151fa in QEventLoop::processEvents (this=0xbff43980, flags={i = -1074513592}) at kernel/qeventloop.cpp:149
#27 0xb7e15642 in QEventLoop::exec (this=0xbff43980, flags={i = -1074513528}) at kernel/qeventloop.cpp:201
#28 0xb7e17ae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#29 0xb68d3bb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#30 0xb4b81310 in kdemain (argc=1, argv=0x8b5d638) at /build/buildd/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#31 0x0804e27d in launch (argc=1, _name=0x8b22fa4 "/usr/bin/plasma-desktop", args=0x8b22fbc "", cwd=0x0, envc=0, envs=0x8b22fc0 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805136d "0") at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:677
#32 0x0804ea5d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1169
#33 0x0804efe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1362
#34 0x0804fbca in main (argc=2, argv=0xbff44174, envp=0xbff44180) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1793

Reported using DrKonqi