Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.85 (KDE 4.2.85 (KDE 4.3 Beta1))
Qt Version: 4.5.1
Operating System: Linux 2.6.30-rc7-next-20090528 x86_64
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
Plasma and panels unexpectedly crashed and restarted.  I could not say exactly what user action prompted the crash.

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 0 (LWP 5359)]

Thread 2 (Thread 0x7f34cbfb7950 (LWP 5391)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f34eab4a83b in QWaitCondition::wait (this=<value optimized out>, mutex=0x100e3f8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f34e7874d1c in QHostInfoAgent::run (this=0x100e3e0) at kernel/qhostinfo.cpp:260
#3  0x00007f34eab49781 in QThreadPrivate::start (arg=0x100e3e0) at thread/qthread_unix.cpp:189
#4  0x00007f34e53743ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f34ed9ba0bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f34ee0af770 (LWP 5359)):
[KCrash Handler]
#5  TaskManager::Task::window (this=0x0) at ../../../libs/taskmanager/task.cpp:357
#6  0x00007f34d051dc4e in AbstractTaskItem::timerEvent (this=0x13bef30, event=<value optimized out>) at ../../../../plasma/applets/tasks/abstracttaskitem.cpp:403
#7  0x00007f34eac41b83 in QObject::event (this=0x13bef30, e=0x13bd4c0) at kernel/qobject.cpp:1082
#8  0x00007f34eb94210b in QGraphicsWidget::event (this=0x13bef30, event=0x7fff5dabeaf0) at graphicsview/qgraphicswidget.cpp:1340
#9  0x00007f34eb3383fc in QApplicationPrivate::notify_helper (this=0x63bbd0, receiver=0x13bef30, e=0x7fff5dabeaf0) at kernel/qapplication.cpp:4057
#10 0x00007f34eb33f6ae in QApplication::notify (this=0x626b20, receiver=0x13bef30, e=0x7fff5dabeaf0) at kernel/qapplication.cpp:4022
#11 0x00007f34ec427526 in KApplication::notify (this=0x626b20, receiver=0x13bef30, event=0x7fff5dabeaf0) at ../../kdeui/kernel/kapplication.cpp:307
#12 0x00007f34eac323ec in QCoreApplication::notifyInternal (this=0x626b20, receiver=0x13bef30, event=0x7fff5dabeaf0) at kernel/qcoreapplication.cpp:610
#13 0x00007f34eac5dd22 in QTimerInfoList::activateTimers (this=0x63f3f0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#14 0x00007f34eac5b7bd in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:164
#15 0x00007f34e55c4fce in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#16 0x00007f34e55c8728 in ?? () from /usr/lib/libglib-2.0.so.0
#17 0x00007f34e55c889c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#18 0x00007f34eac5b706 in QEventDispatcherGlib::processEvents (this=0x60da50, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#19 0x00007f34eb3ce1de in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#20 0x00007f34eac30cc2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#21 0x00007f34eac31094 in QEventLoop::exec (this=0x7fff5dabed90, flags=) at kernel/qeventloop.cpp:200
#22 0x00007f34eac33189 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#23 0x00007f34edc8221f in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/shells/desktop/main.cpp:50
#24 0x00007f34ed8f25a6 in __libc_start_main (main=0x400730 <main>, argc=1, ubp_av=0x7fff5dabf098, init=0x400760 <__libc_csu_init>, fini=<value optimized out>, rtld_fini=<value optimized out>, 
    stack_end=0x7fff5dabf088) at libc-start.c:220
#25 0x0000000000400669 in _start () at ../sysdeps/x86_64/elf/start.S:113

This bug may be a duplicate of or related to bug 192493