Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.5 (KDE 4.3.5)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-17-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I was playing World of Warcraft under WINE, windowed but maximized, with a Pidgin chat window and a Ventrilo window behind it.

1. I clicked on the taskbar entry for Ventrilo (which runs under WINE). It didn't appear within 2 seconds, so...
2. I clicked on the taskbar entry for Pidgin's chats. It didn't appear in ~2 seconds, so...
3. I went back to Warcraft by clicking on its window.
4. Plasma crashed: The taskbar disappeared

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[Current thread is 1 (Thread 0x7febbe6b4750 (LWP 2547))]

Thread 2 (Thread 0x7feb9f741910 (LWP 2554)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007febbe0f54fb in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x2a55548, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2a55548, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007febba52678c in QHostInfoAgent::run (this=0x2a55530) at kernel/qhostinfo.cpp:260
#4  0x00007febbe0f4445 in QThreadPrivate::start (arg=0x2a55530) at thread/qthread_unix.cpp:188
#5  0x00007febbae64a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007febbba4480d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7febbe6b4750 (LWP 2547)):
[KCrash Handler]
#5  QCoreApplication::postEvent (receiver=0x32f5360, event=0x2e723f0, priority=0) at kernel/qcoreapplication.cpp:1012
#6  0x00007febbc204027 in QX11Data::xdndHandleFinished (this=<value optimized out>, xe=<value optimized out>, passive=<value optimized out>) at kernel/qdnd_x11.cpp:1244
#7  0x00007febbc1dfb43 in QApplication::x11ClientMessage (this=<value optimized out>, w=0x266eaf0, event=0x0, passive_only=224) at kernel/qapplication_x11.cpp:3126
#8  0x00007febbc1f0584 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff5a1e41d0) at kernel/qapplication_x11.cpp:3682
#9  0x00007febbc219d0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#10 0x00007febbb0b5bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#11 0x00007febbb0b9598 in ?? () from /lib/libglib-2.0.so.0
#12 0x00007febbb0b96c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#13 0x00007febbe2031a6 in QEventDispatcherGlib::processEvents (this=0x24b7040, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#14 0x00007febbc2194be in QGuiEventDispatcherGlib::processEvents (this=0x32f5360, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#15 0x00007febbe1d9532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#16 0x00007febbe1d9904 in QEventLoop::exec (this=0x7fff5a1e4500, flags=) at kernel/qeventloop.cpp:201
#17 0x00007febbe1dbab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#18 0x00007febb396e59f in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#19 0x0000000000406da8 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a299 "0") at ../../kinit/kinit.cpp:677
#20 0x0000000000407aa0 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#21 0x0000000000407f51 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#22 0x0000000000408bb2 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793
The current source language is "auto; currently asm".
The current source language is "auto; currently c".

Reported using DrKonqi