Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.30-2-686 i686
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
I was dragging the pyweather widget to another position on the screen, at the moment of the crash the google desktop icon went to the left top corner of the screen and the desktop itself vanished. I'm new in the art of debugging, if i mis dbg packages please let me know.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5eb6920 (LWP 2397))]

Thread 2 (Thread 0xa7ec9b70 (LWP 2400)):
#0  0xb7eeb424 in __kernel_vsyscall ()
#1  0xb66190a5 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0xb67dc82d in __pthread_cond_wait (cond=0x87d3698, mutex=0x87d3680) at forward.c:139
#3  0xb7ceb5c2 in QWaitConditionPrivate::wait (this=0x87b5a30, mutex=0x87b5a2c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x87b5a30, mutex=0x87b5a2c, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0xb652ca9a in QHostInfoAgent::run (this=0x87b5a20) at kernel/qhostinfo.cpp:260
#6  0xb7cea5e2 in QThreadPrivate::start (arg=0x87b5a20) at thread/qthread_unix.cpp:188
#7  0xb6615585 in start_thread (arg=0xa7ec9b70) at pthread_create.c:300
#8  0xb67cf2be in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb5eb6920 (LWP 2397)):
[KCrash Handler]
#6  0xb70819a1 in QGraphicsItem::update (this=0x84e91a0, rect=...) at graphicsview/qgraphicsitem.cpp:3977
#7  0xa90ed60f in ?? () from /usr/lib/pymodules/python2.5/PyQt4/QtGui.so
#8  0xa95c8f8d in PyCFunction_Call (func=0x8990f6c, arg=0x84ea02c, kw=0x0) at ../Objects/methodobject.c:73
#9  0xa961a2e1 in call_function (f=0x8843964, throwflag=0) at ../Python/ceval.c:3612
#10 PyEval_EvalFrameEx (f=0x8843964, throwflag=0) at ../Python/ceval.c:2304
#11 0xa961bc0d in PyEval_EvalCodeEx (co=0x8602e30, globals=0x87151c4, locals=0x0, args=0x8712518, argcount=1, kws=0x0, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:2875
#12 0xa95b3e4a in function_call (func=0x8985b54, arg=0x871250c, kw=0x0) at ../Objects/funcobject.c:517
#13 0xa9590867 in PyObject_Call (func=0x0, arg=0x871250c, kw=0x0) at ../Objects/abstract.c:1861
#14 0xa95984b5 in instancemethod_call (func=0x8985b54, arg=0x871250c, kw=0x0) at ../Objects/classobject.c:2519
#15 0xa9590867 in PyObject_Call (func=0x0, arg=0x84ea02c, kw=0x0) at ../Objects/abstract.c:1861
#16 0xa961402c in PyEval_CallObjectWithKeywords (func=0x8521fa4, arg=0x84ea02c, kw=0x0) at ../Python/ceval.c:3481
#17 0xa96ba53f in sip_api_invoke_slot () from /usr/lib/pymodules/python2.5/sip.so
#18 0xa94f6d1b in ?? () from /usr/lib/pymodules/python2.5/PyQt4/QtCore.so
#19 0xa94f6e12 in ?? () from /usr/lib/pymodules/python2.5/PyQt4/QtCore.so
#20 0xa94f6edd in ?? () from /usr/lib/pymodules/python2.5/PyQt4/QtCore.so
#21 0xb7df0303 in QMetaObject::activate (sender=0x858e758, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3112
#22 0xb7df0f42 in QMetaObject::activate (sender=0x858e758, m=0xb7eccd84, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3186
#23 0xb7e2bb37 in QTimer::timeout (this=0x858e758) at .moc/release-shared/moc_qtimer.cpp:128
#24 0xb7df665e in QTimer::timerEvent (this=0x858e758, e=0xbfe9da3c) at kernel/qtimer.cpp:261
#25 0xa944fb95 in ?? () from /usr/lib/pymodules/python2.5/PyQt4/QtCore.so
#26 0xb7deb39f in QObject::event (this=0x858e758, e=0xbfe9da3c) at kernel/qobject.cpp:1074
#27 0xa944fb2b in ?? () from /usr/lib/pymodules/python2.5/PyQt4/QtCore.so
#28 0xb6a7aa94 in QApplicationPrivate::notify_helper (this=0x82152e8, receiver=0x858e758, e=0xbfe9da3c) at kernel/qapplication.cpp:4065
#29 0xb6a82bee in QApplication::notify (this=0x81ee338, receiver=0x858e758, e=0xbfe9da3c) at kernel/qapplication.cpp:3605
#30 0xb74c562d in KApplication::notify (this=0x81ee338, receiver=0x858e758, event=0xbfe9da3c) at ../../kdeui/kernel/kapplication.cpp:302
#31 0xb7ddb1eb in QCoreApplication::notifyInternal (this=0x81ee338, receiver=0x858e758, event=0xbfe9da3c) at kernel/qcoreapplication.cpp:610
#32 0xb7e09e21 in QCoreApplication::sendEvent (this=0x8217aa4) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#33 QTimerInfoList::activateTimers (this=0x8217aa4) at kernel/qeventdispatcher_unix.cpp:580
#34 0xb7e06317 in timerSourceDispatch (source=0x8217f00) at kernel/qeventdispatcher_glib.cpp:184
#35 idleTimerSourceDispatch (source=0x8217f00) at kernel/qeventdispatcher_glib.cpp:231
#36 0xb6660b38 in g_main_dispatch (context=0x8217290) at /build/buildd-glib2.0_2.22.4-1-i386-jRfNZE/glib2.0-2.22.4/glib/gmain.c:1960
#37 IA__g_main_context_dispatch (context=0x8217290) at /build/buildd-glib2.0_2.22.4-1-i386-jRfNZE/glib2.0-2.22.4/glib/gmain.c:2513
#38 0xb66643d0 in g_main_context_iterate (context=0x8217290, block=<value optimized out>, dispatch=1, self=0x8214dc0) at /build/buildd-glib2.0_2.22.4-1-i386-jRfNZE/glib2.0-2.22.4/glib/gmain.c:2591
#39 0xb6664503 in IA__g_main_context_iteration (context=0x8217290, may_block=1) at /build/buildd-glib2.0_2.22.4-1-i386-jRfNZE/glib2.0-2.22.4/glib/gmain.c:2654
#40 0xb7e06041 in QEventDispatcherGlib::processEvents (this=0x82150a8, flags=...) at kernel/qeventdispatcher_glib.cpp:407
#41 0xb6b1a305 in QGuiEventDispatcherGlib::processEvents (this=0x82150a8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#42 0xb7dd983a in QEventLoop::processEvents (this=0xbfe9dcb0, flags=...) at kernel/qeventloop.cpp:149
#43 0xb7dd9c82 in QEventLoop::exec (this=0xbfe9dcb0, flags=...) at kernel/qeventloop.cpp:201
#44 0xb7ddc0d9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#45 0xb6a7a917 in QApplication::exec () at kernel/qapplication.cpp:3525
#46 0xb4a815cd in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#47 0x0804e291 in launch (argc=1, _name=0x819f4f4 "/usr/bin/plasma-desktop", args=0x819f50c "", cwd=0x0, envc=0, envs=0x819f510 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805105f "0") at ../../kinit/kinit.cpp:677
#48 0x0804ea15 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#49 0x0804ee5b in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#50 0x0804f689 in main (argc=2, argv=0xbfe9e524, envp=0xbfe9e530) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi