Version:            (using Devel)
Installed from:    Compiled sources

I was composing mail in evolution but suddenly plasma crashed. I don't think any special steps to reproduce it as whatever I was doing shouldn't have anything with this crash. May be effects or notifications caused it.

Additional info:
KDE 4.3 beta2
kdelibs: r977703
kdebase: r977703
qt: 4.5.1 + qt-copy r967346

Backtrace:
Application: Plasma Workspace (kdeinit), signal: Aborted
[Current thread is 1 (Thread 0xb5e77700 (LWP 4131))]

Thread 2 (Thread 0xa8cc4b90 (LWP 4138)):
#0  0xffffe430 in __kernel_vsyscall ()
#1  0xb7d1fc35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb7d7f722 in QWaitCondition::wait (this=0x875b258, mutex=0x875b254, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  0xb7675ae2 in QHostInfoAgent::run (this=0x875b248) at kernel/qhostinfo.cpp:260
#4  0xb7d7e70e in QThreadPrivate::start (arg=0x875b248) at thread/qthread_unix.cpp:189
#5  0xb7d1c1b5 in start_thread () from /lib/libpthread.so.0
#6  0xb65df3be in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb5e77700 (LWP 4131)):
[KCrash Handler]
#6  0xffffe430 in __kernel_vsyscall ()
#7  0xb6538990 in raise () from /lib/libc.so.6
#8  0xb653a2c8 in abort () from /lib/libc.so.6
#9  0xb657a683 in ?? () from /lib/libc.so.6
#10 0xb657bedb in free () from /lib/libc.so.6
#11 0xb675bec1 in operator delete(void*) () from /usr/lib/libstdc++.so.6
#12 0xb5bc9ac4 in Plasma::Animator::timerEvent (this=0x821e008, event=0xbfbaf0f0) at /home/kde-devel/src/kde4/kdelibs/plasma/animator.cpp:689
#13 0xb7e8326f in QObject::event (this=0x821e008, e=0xbfbaf0f0) at kernel/qobject.cpp:1082
#14 0xb68b669c in QApplicationPrivate::notify_helper (this=0x80a8068, receiver=0x821e008, e=0xbfbaf0f0) at kernel/qapplication.cpp:4057
#15 0xb68be99e in QApplication::notify (this=0x80a1f68, receiver=0x821e008, e=0xbfbaf0f0) at kernel/qapplication.cpp:3604
#16 0xb73deff1 in KApplication::notify (this=0x80a1f68, receiver=0x821e008, event=0xbfbaf0f0) at /home/kde-devel/src/kde4/kdelibs/kdeui/kernel/kapplication.cpp:302
#17 0xb7e72adb in QCoreApplication::notifyInternal (this=0x80a1f68, receiver=0x821e008, event=0xbfbaf0f0) at kernel/qcoreapplication.cpp:610
#18 0xb7ea2176 in QTimerInfoList::activateTimers (this=0x80aa7bc) at kernel/qcoreapplication.h:213
#19 0xb7e9e600 in timerSourceDispatch (source=0x80aa788) at kernel/qeventdispatcher_glib.cpp:164
#20 0xb645c738 in IA__g_main_context_dispatch (context=0x80aa098) at gmain.c:1814
#21 0xb645fc73 in g_main_context_iterate (context=0x80aa098, block=1, dispatch=1, self=0x80a6190) at gmain.c:2445
#22 0xb645fdf8 in IA__g_main_context_iteration (context=0x80aa098, may_block=1) at gmain.c:2508
#23 0xb7e9e558 in QEventDispatcherGlib::processEvents (this=0x80a5648, flags={i = -1078267240}) at kernel/qeventdispatcher_glib.cpp:324
#24 0xb6956975 in QGuiEventDispatcherGlib::processEvents (this=0x80a5648, flags={i = -1078267192}) at kernel/qguieventdispatcher_glib.cpp:202
#25 0xb7e710fa in QEventLoop::processEvents (this=0xbfbaf340, flags={i = -1078267128}) at kernel/qeventloop.cpp:149
#26 0xb7e7153a in QEventLoop::exec (this=0xbfbaf340, flags={i = -1078267064}) at kernel/qeventloop.cpp:200
#27 0xb7e739e9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#28 0xb68b6517 in QApplication::exec () at kernel/qapplication.cpp:3526
#29 0xb48ae892 in kdemain (argc=1, argv=0x805e5e8) at /home/kde-devel/src/kde4/kdebase/workspace/plasma/shells/desktop/main.cpp:50
#30 0x0804e94c in launch (argc=1, _name=0x8089ffc "/home/kde-devel/kde4/bin/plasma-desktop", args=0x808a024 "", cwd=0x0, envc=0, envs=0x808a028 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8052526 "0") at /home/kde-devel/src/kde4/kdelibs/kinit/kinit.cpp:672
#31 0x0804f0bb in handle_launcher_request (sock=7, who=0x80527dc "launcher") at /home/kde-devel/src/kde4/kdelibs/kinit/kinit.cpp:1164
#32 0x0804f9e4 in handle_requests (waitForPid=0) at /home/kde-devel/src/kde4/kdelibs/kinit/kinit.cpp:1357
#33 0x080503b3 in main (argc=2, argv=0xbfbafa74, envp=0xbfbafa80) at /home/kde-devel/src/kde4/kdelibs/kinit/kinit.cpp:1784