Version:            (using Devel)
Compiler:          gcc-4.3.2 
OS:                Linux
Installed from:    Compiled sources

What happened:

1) I went offline with all kopete accounts
2) I right clicked on the kopete icon in the taskbar to quit the program
3) Plasma (KDE-4.1.71) crashed with the backtrace below:

Not sure if it helps or is related, but I also noticed that there were some drawing problems with the kopete icon too...

Backtrace:

Application: Plasma Workspace (plasma), signal SIGSEGV
[Current thread is 0 (LWP 11517)]

Thread 3 (Thread 0xb2e4ab90 (LWP 11518)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb676cbe5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb67c9c8f in QWaitCondition::wait (this=0x80ff380, mutex=0x80ff37c, time=4294967295) at thread/qwaitcondition_unix.cpp:88
#3  0xb6a369a3 in QHostInfoAgent::run (this=0x80ff370) at kernel/qhostinfo.cpp:247
#4  0xb67c8a24 in QThreadPrivate::start (arg=0x80ff370) at thread/qthread_unix.cpp:191
#5  0xb6769160 in start_thread (arg=0xb2e4ab90) at pthread_create.c:297
#6  0xb5a6fc0e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xa8caab90 (LWP 11519)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb676cbe5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb67c9c8f in QWaitCondition::wait (this=0x8192650, mutex=0x819264c, time=4294967295) at thread/qwaitcondition_unix.cpp:88
#3  0xb2f81ecf in RenderThread::run (this=0x8192644) at /var/tmp/portage/kde-base/plasma-workspace-4.1.71/work/plasma-workspace-4.1.71/plasma/wallpapers/image/renderthread.cpp:90
#4  0xb67c8a24 in QThreadPrivate::start (arg=0x8192644) at thread/qthread_unix.cpp:191
#5  0xb6769160 in start_thread (arg=0xa8caab90) at pthread_create.c:297
#6  0xb5a6fc0e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb4951720 (LWP 11517)):
[KCrash Handler]
#6  0x03ae1103 in ?? ()
#7  0xb68c2b31 in QMetaObject::invokeMethod (obj=0x848a058, member=0x84f5910 "animationUpdate", type=Qt::AutoConnection, ret={<QGenericArgument> = {_data = 0x0, _name = 0x0}, <No data fields>}, val0=
      {_data = 0xbfdd07d8, _name = 0xb8026c1b "qreal"}, val1={_data = 0x0, _name = 0x0}, val2={_data = 0x0, _name = 0x0}, val3={_data = 0x0, _name = 0x0}, val4={_data = 0x0, _name = 0x0}, val5=
      {_data = 0x0, _name = 0x0}, val6={_data = 0x0, _name = 0x0}, val7={_data = 0x0, _name = 0x0}, val8={_data = 0x0, _name = 0x0}, val9={_data = 0x0, _name = 0x0}) at kernel/qmetaobject.cpp:951
#8  0xb7f288db in Plasma::Animator::timerEvent (this=0x80f0690, event=0xbfdd0c5c) at /usr/include/qt4/QtCore/qobjectdefs.h:388
#9  0xb68c9969 in QObject::event (this=0x80f0690, e=0xbfdd0c5c) at kernel/qobject.cpp:1117
#10 0xb5eeefab in QApplicationPrivate::notify_helper (this=0x8077120, receiver=0x80f0690, e=0xbfdd0c5c) at kernel/qapplication.cpp:3809
#11 0xb5ef5ae5 in QApplication::notify (this=0x805d2f8, receiver=0x80f0690, e=0xbfdd0c5c) at kernel/qapplication.cpp:3399
#12 0xb6fccf95 in KApplication::notify (this=0x805d2f8, receiver=0x80f0690, event=0xbfdd0c5c) at /var/tmp/portage/kde-base/kdelibs-4.1.71/work/kdelibs-4.1.71/kdeui/kernel/kapplication.cpp:307
#13 0xb68b9b21 in QCoreApplication::notifyInternal (this=0x805d2f8, receiver=0x80f0690, event=0xbfdd0c5c) at kernel/qcoreapplication.cpp:593
#14 0xb68e636e in QTimerInfoList::activateTimers (this=0x807798c) at kernel/qcoreapplication.h:215
#15 0xb68e6532 in QEventDispatcherUNIX::processEvents (this=0x805d6c8, flags={i = -1076031748}) at kernel/qeventdispatcher_unix.cpp:899
#16 0xb5f8464f in QEventDispatcherX11::processEvents (this=0x805d6c8, flags={i = -1076031688}) at kernel/qeventdispatcher_x11.cpp:154
#17 0xb68b86b0 in QEventLoop::processEvents (this=0xbfdd0fb0, flags={i = -1076031624}) at kernel/qeventloop.cpp:149
#18 0xb68b8852 in QEventLoop::exec (this=0xbfdd0fb0, flags={i = -1076031560}) at kernel/qeventloop.cpp:200
#19 0xb68bac6f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:851
#20 0xb5eeed43 in QApplication::exec () at kernel/qapplication.cpp:3337
#21 0xb807c05d in kdemain (argc=1, argv=0xbfdd1184) at /var/tmp/portage/kde-base/plasma-workspace-4.1.71/work/plasma-workspace-4.1.71/plasma/shells/desktop/main.cpp:58
#22 0x080488d2 in main (argc=139063832, argv=0x83645e8) at /var/tmp/portage/kde-base/plasma-workspace-4.1.71/work/plasma-workspace_build/plasma/shells/desktop/plasma_qgv_dummy.cpp:3