Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-11-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Trying to add the network management widget to the taskbar crashed plasma.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 4462)]

Thread 2 (Thread 0x7f3bd4f10950 (LWP 4465)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f3bf4f5ed19 in QWaitCondition::wait (this=0x126b9c0, mutex=0x126b9b8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f3bf3de881c in QHostInfoAgent::run (this=0x126b9a0) at kernel/qhostinfo.cpp:260
#3  0x00007f3bf4f5dd35 in QThreadPrivate::start (arg=0x126b9a0) at thread/qthread_unix.cpp:188
#4  0x00007f3bf0e573ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f3bf1a3bfcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3bf5519750 (LWP 4462)):
[KCrash Handler]
#5  QCoreApplication::postEvent (receiver=0x15e5440, event=0x161e0c0, priority=0) at kernel/qcoreapplication.cpp:1012
#6  0x00007f3bf2696523 in QX11Data::xdndHandleFinished (this=<value optimized out>, xe=0x7ffffd55ad80, passive=false) at kernel/qdnd_x11.cpp:1244
#7  0x00007f3bf266fe26 in QApplication::x11ClientMessage (this=<value optimized out>, w=0x17032c0, event=0x7ffffd55ad80, passive_only=false) at kernel/qapplication_x11.cpp:3126
#8  0x00007f3bf26831f7 in QApplication::x11ProcessEvent (this=0xa6dad0, event=0x7ffffd55ad80) at kernel/qapplication_x11.cpp:3682
#9  0x00007f3bf26ac454 in x11EventSourceDispatch (s=0xab2480, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#10 0x00007f3bf10a620a in IA__g_main_context_dispatch (context=0xab1130) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#11 0x00007f3bf10a98e0 in g_main_context_iterate (context=0xab1130, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#12 0x00007f3bf10a9a7c in IA__g_main_context_iteration (context=0xab1130, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#13 0x00007f3bf5070a8f in QEventDispatcherGlib::processEvents (this=0xaae370, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#14 0x00007f3bf26abbdf in QGuiEventDispatcherGlib::processEvents (this=0x15e5440, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#15 0x00007f3bf5045f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -44715920}) at kernel/qeventloop.cpp:149
#16 0x00007f3bf5046314 in QEventLoop::exec (this=0x7ffffd55b0b0, flags={i = -44715840}) at kernel/qeventloop.cpp:201
#17 0x00007f3bf50485e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#18 0x00007f3be8db91eb in kdemain (argc=1, argv=0xa63b30) at /build/buildd/kdebase-workspace-4.3.0/plasma/shells/desktop/main.cpp:50
#19 0x0000000000407215 in launch (argc=1, _name=0xa63058 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0xa63078 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3a1 "0") at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:676
#20 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1168
#21 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1361
#22 0x0000000000408b26 in main (argc=2, argv=0x7ffffd55bf58, envp=0x7ffffd55bf70) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1788

Reported using DrKonqi