I can confirm this bug with kopete svn trunk r835161, allthough it only crashes once when adding the jabber account with the transports, after that crash everything works like it should (except if you dare to remove that account again ;) )

kopete(17568)/kopete (jabber) JabberTransport::JabberTransport: "<email address hidden>/icq.foxybanana.com"  transport created:  myself:  JabberContact(0x1c0b610)
ASSERT: "identityItemHash.contains(idnt)" in file /var/tmp/paludis/kde-base-kopete-scm/work/kopete/kopete/kopete/config/accounts/kopeteaccountconfig.cpp, line 181
kopete(17568) ChatWindowStyleManager::~ChatWindowStyleManager:
kopete(17568) ChatWindowStyle::~ChatWindowStyle:
kopete(17568)/libkopete Kopete::PluginManagerPrivate::~PluginManagerPrivate: Destructing plugin manager without going through the shutdown process! Backtrace is:
"[
0: /usr/kde/svn/lib64/libkdecore.so.5(_Z14kRealBacktracei+0x38) [0x7fa28382b908]
1: /usr/kde/svn/lib64/libkopete.so.4 [0x7fa282385ba9]
2: /usr/kde/svn/lib64/libkopete.so.4 [0x7fa2823872e2]
3: /usr/kde/svn/lib64/libkopete.so.4 [0x7fa2823834f2]
4: /lib64/libc.so.6(exit+0x9d) [0x7fa27fd3bddd]
5: /usr/lib64/qt4/libQtCore.so.4(_Z17qt_message_output9QtMsgTypePKc+0x82) [0x7fa283c04412]
6: /usr/lib64/qt4/libQtCore.so.4(_Z6qFatalPKcz+0xd7) [0x7fa283c04557]
7: /usr/kde/svn/lib64/kde4/kcm_kopete_accountconfig.so [0x7fa2703f3aa8]
8: /usr/kde/svn/lib64/kde4/kcm_kopete_accountconfig.so [0x7fa2703f3707]
9: /usr/lib64/qt4/libQtCore.so.4(_ZN11QMetaObject8activateEP7QObjectiiPPv+0x23c) [0x7fa283d3be6c]
10: /usr/kde/svn/lib64/libkopete.so.4(_ZN6Kopete14AccountManager17accountRegisteredEPNS_7AccountE+0x2f) [0x7fa28235223f]
11: /usr/kde/svn/lib64/libkopete.so.4(_ZN6Kopete14AccountManager15registerAccountEPNS_7AccountE+0x1be) [0x7fa28235305e]
12: /usr/kde/svn/lib64/kde4/kopete_jabber.so [0x7fa27273716c]
13: /usr/kde/svn/lib64/kde4/kopete_jabber.so [0x7fa27273b422]
14: /usr/lib64/qt4/libQtCore.so.4(_ZN11QMetaObject8activateEP7QObjectiiPPv+0x23c) [0x7fa283d3be6c]
15: /usr/kde/svn/lib64/libiris_kopete.so.1(_ZN4XMPP4Task4doneEv+0x3a) [0x7fa2721606fa]
16: /usr/kde/svn/lib64/libiris_kopete.so.1(_ZN4XMPP13DiscoInfoTask4takeERK11QDomElement+0x540) [0x7fa27215f040]
17: /usr/kde/svn/lib64/libiris_kopete.so.1(_ZN4XMPP4Task4takeERK11QDomElement+0x62) [0x7fa272160942]
18: /usr/kde/svn/lib64/libiris_kopete.so.1(_ZN4XMPP6Client10distributeERK11QDomElement+0x114) [0x7fa27212f1f4]
19: /usr/kde/svn/lib64/libiris_kopete.so.1(_ZN4XMPP6Client15streamReadyReadEv+0x150) [0x7fa27212fc20]
20: /usr/kde/svn/lib64/libiris_kopete.so.1(_ZN4XMPP6Client11qt_metacallEN11QMetaObject4CallEiPPv+0x225) [0x7fa2720ef4a5]
21: /usr/lib64/qt4/libQtCore.so.4(_ZN11QMetaObject8activateEP7QObjectiiPPv+0x23c) [0x7fa283d3be6c]
22: /usr/kde/svn/lib64/libiris_kopete.so.1(_ZN4XMPP12ClientStream11qt_metacallEN11QMetaObject4CallEiPPv+0x242) [0x7fa2720ef052]
23: /usr/lib64/qt4/libQtCore.so.4(_ZN11QMetaObject8activateEP7QObjectiiPPv+0x23c) [0x7fa283d3be6c]
24: /usr/lib64/qt4/libQtCore.so.4 [0x7fa283d44fea]
25: /usr/lib64/qt4/libQtCore.so.4(_ZN7QObject5eventEP6QEvent+0xb3) [0x7fa283d35673]
26: /usr/lib64/qt4/libQtGui.so.4(_ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent+0xbd) [0x7fa2804f9ffd]
27: /usr/lib64/qt4/libQtGui.so.4(_ZN12QApplication6notifyEP7QObjectP6QEvent+0x9a) [0x7fa2804fb53a]
28: /usr/kde/svn/lib64/libkdeui.so.5(_ZN12KApplication6notifyEP7QObjectP6QEvent+0x3b) [0x7fa2830f5eab]
29: /usr/lib64/qt4/libQtCore.so.4(_ZN16QCoreApplication14notifyInternalEP7QObjectP6QEvent+0xd0) [0x7fa283d23bd0]
30: /usr/lib64/qt4/libQtCore.so.4 [0x7fa283d54855]
31: /usr/lib64/qt4/libQtCore.so.4(_ZN20QEventDispatcherUNIX13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE+0x128) [0x7fa283d564d8]
32: /usr/lib64/qt4/libQtGui.so.4 [0x7fa28059bd4a]
33: /usr/lib64/qt4/libQtCore.so.4(_ZN10QEventLoop13processEventsE6QFlagsINS_17ProcessEventsFlagEE+0x32) [0x7fa283d22812]
34: /usr/lib64/qt4/libQtCore.so.4(_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE+0x19d) [0x7fa283d22cad]
35: /usr/lib64/qt4/libQtCore.so.4(_ZN16QCoreApplication4execEv+0xbf) [0x7fa283d283ef]
36: kopete [0x444c61]
37: /lib64/libc.so.6(__libc_start_main+0xe6) [0x7fa27fd25486]
38: kopete(_ZN10Q3ListView18drawContentsOffsetEP8QPainteriiiiii+0x79) [0x423e99]
]
"
kopete(17568)/libkopete Kopete::PluginManagerPrivate::~PluginManagerPrivate: Deleting stale plugin ' "" '
Fatal Error: Accessed global static 'MessageHandlerFactory::FactoryList *g_list()' after destruction. Defined at /var/tmp/paludis/kde-base-kopete-scm/work/kopete/kopete/libkopete/kopetemessagehandler.cpp:82