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 3796)]

Thread 3 (Thread 0xa9399b90 (LWP 3798)):
#0  0xb8083430 in __kernel_vsyscall ()
#1  0xb659a0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb677a2ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e80172 in QWaitCondition::wait (this=0x8ab6360, mutex=0x8ab635c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb77bdac2 in QHostInfoAgent::run (this=0x8ab6350) at kernel/qhostinfo.cpp:260
#5  0xb7e7f132 in QThreadPrivate::start (arg=0x8ab6350) at thread/qthread_unix.cpp:188
#6  0xb65964ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb676b49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa321eb90 (LWP 3800)):
#0  0xb8083430 in __kernel_vsyscall ()
#1  0xb659a412 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb677a344 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e7eb29 in thread_sleep (ti=0xa321e2b0) at thread/qthread_unix.cpp:297
#4  0xb7e7ec5b in QThread::msleep (msecs=<value optimized out>) at thread/qthread_unix.cpp:323
#5  0xa93fa0c8 in ?? () from /usr/lib/kde4/plasma_applet_cwp.so
#6  0xb7e7f132 in QThreadPrivate::start (arg=0x8fcfe10) at thread/qthread_unix.cpp:188
#7  0xb65964ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0xb676b49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb60a3a10 (LWP 3796)):
[KCrash Handler]
#6  AbstractTaskItem::basicPreferredSize (this=0x9ea0980) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.h:92
#7  0xa991c74c in TaskItemLayout::maximumRows (this=0x8bf62c8) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskitemlayout.cpp:185
#8  0xa9925ef4 in TaskGroupItem::optimumCapacity (this=0x8c0f7b0) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/taskgroupitem.cpp:1224
#9  0xa9917508 in Tasks::adjustGroupingStrategy (this=0x88f4030) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.cpp:241
#10 0xa991779c in Tasks::constraintsEvent (this=0x88f4030, constraints={i = -1081481996}) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/tasks/tasks.cpp:165
#11 0xb5e0bce0 in Plasma::Applet::flushPendingConstraintsEvents (this=0x88f4030) at /build/buildd/kde4libs-4.3.1/plasma/applet.cpp:1173
#12 0xb5e0c388 in Plasma::Applet::timerEvent (this=0x88f4030, event=0xbf89e9ec) at /build/buildd/kde4libs-4.3.1/plasma/applet.cpp:2120
#13 0xb7f8416f in QObject::event (this=0x88f4030, e=0xbf89e9ec) at kernel/qobject.cpp:1075
#14 0xb708e627 in QGraphicsWidget::event (this=0x88f4030, event=0xbf89e9ec) at graphicsview/qgraphicswidget.cpp:1340
#15 0xb6a30d3c in QApplicationPrivate::notify_helper (this=0x8682a20, receiver=0x88f4030, e=0xbf89e9ec) at kernel/qapplication.cpp:4056
#16 0xb6a3903e in QApplication::notify (this=0x867cab8, receiver=0x88f4030, e=0xbf89e9ec) at kernel/qapplication.cpp:3603
#17 0xb754185d in KApplication::notify (this=0x867cab8, receiver=0x88f4030, event=0xbf89e9ec) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#18 0xb7f73bcb in QCoreApplication::notifyInternal (this=0x867cab8, receiver=0x88f4030, event=0xbf89e9ec) at kernel/qcoreapplication.cpp:610
#19 0xb7fa2d51 in QTimerInfoList::activateTimers (this=0x8685874) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 0xb7f9f3a0 in timerSourceDispatch (source=0x8685840) at kernel/qeventdispatcher_glib.cpp:165
#21 0xb65e3b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#22 0xb65e70eb in ?? () from /usr/lib/libglib-2.0.so.0
#23 0xb65e7268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#24 0xb7f9f2f8 in QEventDispatcherGlib::processEvents (this=0x86823f8, flags={i = -1081480344}) at kernel/qeventdispatcher_glib.cpp:327
#25 0xb6ad2a75 in QGuiEventDispatcherGlib::processEvents (this=0x86823f8, flags={i = -1081480296}) at kernel/qguieventdispatcher_glib.cpp:202
#26 0xb7f721fa in QEventLoop::processEvents (this=0xbf89ec10, flags={i = -1081480232}) at kernel/qeventloop.cpp:149
#27 0xb7f72642 in QEventLoop::exec (this=0xbf89ec10, flags={i = -1081480168}) at kernel/qeventloop.cpp:201
#28 0xb7f74ae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#29 0xb6a30bb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#30 0xb4bf5310 in kdemain (argc=1, argv=0x86566f0) at /build/buildd/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#31 0x0804e27d in launch (argc=1, _name=0x861b57c "/usr/bin/plasma-desktop", args=0x861b594 "", cwd=0x0, envc=0, envs=0x861b598 "", 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=0xbf89f404, envp=0xbf89f410) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1793

Reported using DrKonqi