Version:           0.70.0 (using KDE 4.2.1)
Compiler:          gcc -4.4 
OS:                Linux
Installed from:    Fedora RPMs

This is what I did:

* 3 accounts: Jabber, ICQ and MSN
* Deleted MSN account
* Right-click on buddy which was an msn-buddy (in order to delete it)
-> crash

Stacktrace:
Application: Kopete (kopete), signal SIGSEGV
0x009f9c4c in nanosleep () from /lib/libc.so.6
[Current thread is 1 (Thread 0xb7f21ab0 (LWP 5211))]

Thread 3 (Thread 0xb66f2b70 (LWP 5212)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S:123
#1  0x05213557 in QWaitConditionPrivate::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:159
#3  0x05477eda in QHostInfoAgent::run (this=0x87eb8e0) at kernel/qhostinfo.cpp:260
#4  0x052124ee in QThreadPrivate::start (arg=0x87eb8e0) at thread/qthread_unix.cpp:189
#5  0x00b067d7 in start_thread (arg=0xb66f2b70) at pthread_create.c:297
#6  0x00a3ba0e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xb5affb70 (LWP 5213)):
#0  0x00c3bfb6 in *__GI_clock_gettime (clock_id=12845044, tp=0xb5afef68) at ../sysdeps/unix/clock_gettime.c:100
#1  0x05331e3b in QTimerInfoList::getTime (this=0x879b4cc, t=@0x879b4f0) at kernel/qeventdispatcher_unix.cpp:339
#2  0x05332041 in QTimerInfoList::updateCurrentTime (this=0x879b4cc) at kernel/qeventdispatcher_unix.cpp:297
#3  0x05332aec in QTimerInfoList::timerWait (this=0x879b4cc, tm=@0xb5afeff4) at kernel/qeventdispatcher_unix.cpp:420
#4  0x05330550 in timerSourcePrepare (source=0x879b498, timeout=0xb5aff05c) at kernel/qeventdispatcher_glib.cpp:140
#5  0x0511bff0 in IA__g_main_context_prepare (context=0x879bf38, priority=0xb5aff0dc) at gmain.c:2134
#6  0x0511c3c1 in g_main_context_iterate (context=0x879bf38, block=<value optimized out>, dispatch=1, self=0x87a1760) at gmain.c:2428
#7  0x0511c90a in IA__g_main_context_iteration (context=0x879bf38, may_block=1) at gmain.c:2511
#8  0x053303a7 in QEventDispatcherGlib::processEvents (this=0x879bec8, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:325
#9  0x05303379 in QEventLoop::processEvents (this=0x879b5b0, flags=) at kernel/qeventloop.cpp:149
#10 0x053037c2 in QEventLoop::exec (this=0x879b5b0, flags={i = 0}) at kernel/qeventloop.cpp:200
#11 0x01573d0a in QCA::SyncThread::run() () from /usr/lib/libqca.so.2
#12 0x052124ee in QThreadPrivate::start (arg=0x87a0d38) at thread/qthread_unix.cpp:189
#13 0x00b067d7 in start_thread (arg=0xb5affb70) at pthread_create.c:297
#14 0x00a3ba0e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Current language:  auto; currently asm

Thread 1 (Thread 0xb7f21ab0 (LWP 5211)):
[KCrash Handler]
#5  0x070652ba in Kopete::Account::myself() const () from /usr/lib/libkopete.so.4
#6  0x0707f6ec in Kopete::Contact::isOnline() const () from /usr/lib/libkopete.so.4
#7  0x07098fb9 in Kopete::MetaContact::isOnline() const () from /usr/lib/libkopete.so.4
#8  0x0709995e in Kopete::MetaContact::isReachable() const () from /usr/lib/libkopete.so.4
#9  0x08069f5e in _start ()
Current language:  auto; currently c


I used pidgin a long time, but kopete is way better :)
Thanks a lot for kopete.