Version:           0.12.5 (using KDE 3.5.7, Kubuntu (feisty) 4:3.5.7-0ubuntu1~feisty2)
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.20-16-realtime

Not reproducible. Has happened one time to me.

I had some accounts connected and some disconnected. I did Tray/Set Status/Offline, and a few seconds later Tray/Set Status/Online. Kopete crashed at this point.

Stacktrace:

Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1241311536 (LWP 5332)]
[KCrash handler]
#6  0xb67e4f88 in QShared::ref () from /usr/lib/libqt-mt.so.3
#7  0xb6bd44bb in QString::QString () from /usr/lib/libqt-mt.so.3
#8  0xb7e766ec in Kopete::Group::displayName (this=0x8445d58)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/libkopete/kopetegroup.cpp:238
#9  0xb5606754 in JabberBaseContact::updateContact (this=0x83cd028, 
    item=@0xbfa4ae18)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/jabberbasecontact.cpp:167
#10 0xb5607fcb in JabberContactPool::addContact (this=0x8337618, 
    contact=@0xbfa4ae18, metaContact=0x81fc280, dirty=false)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/jabbercontactpool.cpp:75
#11 0xb561000e in JabberAccount::slotContactUpdated (this=0x8362278, 
    item=@0xbfa4ae18)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/jabberaccount.cpp:1295
#12 0xb5627da6 in JabberAccount::qt_invoke (this=0x8362278, _id=48, 
    _o=0xbfa4acc4) at ./jabberaccount.moc:263
#13 0xb68bc88b in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#14 0xb5703291 in JabberClient::newContact (this=0x8763cd8, t0=@0xbfa4ae18)
    at ./jabberclient.moc:353
#15 0xb57032e4 in JabberClient::slotNewContact (this=0x8763cd8, 
    item=@0xbfa4ae18)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/jabberclient.cpp:1062
#16 0xb5706354 in JabberClient::qt_invoke (this=0x8763cd8, _id=12, 
    _o=0xbfa4adb4) at ./jabberclient.moc:511
#17 0xb68bc88b in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#18 0xb56610a1 in XMPP::Client::rosterItemAdded (this=0xb4a88650, 
    t0=@0xbfa4ae18) at im.moc.cpp:360
#19 0xb56ae353 in XMPP::Client::importRosterItem (this=0xb4a88650, 
    item=@0xb495d408)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-im/client.cpp:975
#20 0xb56ae614 in XMPP::Client::importRoster (this=0xb4a88650, r=@0xb4a31d68)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-im/client.cpp:924
#21 0xb56ae67c in XMPP::Client::slotRosterRequestFinished (this=0xb4a88650)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-im/client.cpp:899
#22 0xb566074b in XMPP::Client::qt_invoke (this=0xb4a88650, _id=6, 
    _o=0xbfa4afec) at im.moc.cpp:545
#23 0xb68bc88b in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#24 0xb68bd330 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#25 0xb565fe19 in XMPP::Task::finished (this=0xb46a5238) at im.moc.cpp:88
#26 0xb56a7bfc in XMPP::Task::done (this=0xb46a5238)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-im/client.cpp:1326
#27 0xb56a7cd7 in XMPP::Task::setSuccess (this=0xb46a5238, code=0, 
    str=@0xbfa4b0d8)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-im/client.cpp:1293
#28 0xb56c95ec in XMPP::JT_Roster::take (this=0xb46a5238, x=@0xbfa4b1b8)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-im/xmpp_tasks.cpp:421
#29 0xb56a8111 in XMPP::Task::take (this=0xb49549d8, x=@0xbfa4b1b8)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-im/client.cpp:1249
#30 0xb56ac64d in XMPP::Client::distribute (this=0xb4a88650, x=@0xbfa4b1b8)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-im/client.cpp:573
#31 0xb56acf9a in XMPP::Client::streamReadyRead (this=0xb4a88650)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-im/client.cpp:520
#32 0xb5660707 in XMPP::Client::qt_invoke (this=0xb4a88650, _id=3, 
    _o=0xbfa4b29c) at im.moc.cpp:542
#33 0xb68bc88b in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#34 0xb68bd330 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#35 0xb566001c in XMPP::Stream::readyRead (this=0xb4a8f300)
    at xmpp.moc.cpp:617
#36 0xb569646d in XMPP::ClientStream::doReadyRead (this=0xb4a8f300)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/protocols/jabber/libiris/iris/xmpp-core/stream.cpp:1280
#37 0xb5660ab5 in XMPP::ClientStream::qt_invoke (this=0xb4a8f300, _id=20, 
    _o=0xbfa4b388) at xmpp.moc.cpp:888
#38 0xb68bc88b in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#39 0xb6c48ae0 in QSignal::signal () from /usr/lib/libqt-mt.so.3
#40 0xb68dc81e in QSignal::activate () from /usr/lib/libqt-mt.so.3
#41 0xb68e4234 in QSingleShotTimer::event () from /usr/lib/libqt-mt.so.3
#42 0xb6853a60 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#43 0xb685588f in QApplication::notify () from /usr/lib/libqt-mt.so.3
#44 0xb7017c32 in KApplication::notify (this=0xbfa4b9b4, receiver=0x81f3a28, 
    event=0xbfa4b6d8)
    at /root/kdelibs/kdelibs-3.5.7/./kdecore/kapplication.cpp:550
#45 0xb67e61e9 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#46 0xb68464ab in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#47 0xb67fad25 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#48 0xb686e136 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#49 0xb686df46 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#50 0xb6855609 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#51 0x0807fefc in main (argc=0, argv=0x2)
    at /root/kdenetwork/kdenetwork-3.5.7/./kopete/kopete/main.cpp:107
#52 0xb6078ebc in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#53 0x0806f271 in _start ()