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 2.6.28-11-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I was browsing on the net, when I ran kontact. After a few seconds, kontact  window hadn't show up and plasma crashed, displaying the crash handler window

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 0 (LWP 4098)]

Thread 2 (Thread 0xa8089b90 (LWP 4099)):
#0  0xb7f54430 in __kernel_vsyscall ()
#1  0xb50270e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb62772ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb645b5b2 in QWaitCondition::wait (this=0x8d159a8, mutex=0x8d159a4, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb78b9ae2 in QHostInfoAgent::run (this=0x8d15998) at kernel/qhostinfo.cpp:260
#5  0xb645a56e in QThreadPrivate::start (arg=0x8d15998) at thread/qthread_unix.cpp:189
#6  0xb50234ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb626849e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb3c52730 (LWP 4098)):
[KCrash Handler]
#6  TaskManager::Task::window (this=0x107ccb68) at /build/buildd/kdebase-workspace-4.2.85/libs/taskmanager/task.cpp:356
#7  0xb655ef0f in QObject::event (this=0x107ccb68, e=0x0) at kernel/qobject.cpp:1082
#8  0xb6e62257 in QGraphicsWidget::event (this=0x107ccb68, event=0xbf86f75c) at graphicsview/qgraphicswidget.cpp:1340
#9  0xb67d9bcc in QApplicationPrivate::notify_helper (this=0x87619d0, receiver=0x107ccb68, e=0xbf86f75c) at kernel/qapplication.cpp:4057
#10 0xb67e1ede in QApplication::notify (this=0x87534d0, receiver=0x107ccb68, e=0xbf86f75c) at kernel/qapplication.cpp:3604
#11 0xb763bc9d in KApplication::notify (this=0x87534d0, receiver=0x107ccb68, event=0xbf86f75c) at /build/buildd/kde4libs-4.2.85/kdeui/kernel/kapplication.cpp:307
#12 0xb654e7ab in QCoreApplication::notifyInternal (this=0x87534d0, receiver=0x107ccb68, event=0xbf86f75c) at kernel/qcoreapplication.cpp:610
#13 0xb657db31 in QTimerInfoList::activateTimers (this=0x8763a74) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#14 0xb657a280 in timerSourceDispatch (source=0x8763a40) at kernel/qeventdispatcher_glib.cpp:164
#15 0xb4e21b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#16 0xb4e250eb in ?? () from /usr/lib/libglib-2.0.so.0
#17 0xb4e25268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#18 0xb657a1d8 in QEventDispatcherGlib::processEvents (this=0x8760f80, flags={i = -1081673512}) at kernel/qeventdispatcher_glib.cpp:324
#19 0xb687b765 in QGuiEventDispatcherGlib::processEvents (this=0x8760f80, flags={i = -1081673464}) at kernel/qguieventdispatcher_glib.cpp:202
#20 0xb654cdda in QEventLoop::processEvents (this=0xbf86f980, flags={i = -1081673400}) at kernel/qeventloop.cpp:149
#21 0xb654d21a in QEventLoop::exec (this=0xbf86f980, flags={i = -1081673336}) at kernel/qeventloop.cpp:200
#22 0xb654f6c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#23 0xb67d9a47 in QApplication::exec () at kernel/qapplication.cpp:3526
#24 0xb7ef8290 in kdemain (argc=1, argv=0xbf86fb34) at /build/buildd/kdebase-workspace-4.2.85/plasma/shells/desktop/main.cpp:50
#25 0x08048712 in main (argc=0, argv=0xb62e2ff4) at /build/buildd/kdebase-workspace-4.2.85/obj-i486-linux-gnu/plasma/shells/desktop/plasma-desktop_dummy.cpp:3