Version:           0.6.2 (using KDE KDE 3.1.2)
Installed from:    Compiled From Sources
Compiler:          gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7) 
OS:          Linux

Sonds a bit like the UIN steal bugs that came up before. The UIN steal dialog pops up, but when okay is pressed, kopete dies. Backtrace below. I have been using 0.6.2 with KDE3.1.0 for a few weeks and did not have this problem, now I have upgraded to 3.1.2 it happens on every steal. Failure occurs with or without Jabber plugin which is the only other plugin I use.

Backtrace doesn't look much use to me. I did use the --nofork option:

Nick-> kopete --nofork
QObject::connect: No such signal Jabber::Client::groupChatPresence(const Jid&)
QObject::connect:  (sender name:   'unnamed')
QObject::connect:  (receiver name: 'unnamed')
QObject::connect: No such signal Jabber::Client::groupChatError(const Jid&,int,QString&)
QObject::connect:  (sender name:   'unnamed')
QObject::connect:  (receiver name: 'unnamed')
kopete: WARNING: 10:27:49 [WRN] List event 0001 not found
kopete: WARNING: 10:27:49 [WRN] Various event ID 0004 not found (A)
kopete: WARNING: 10:28:09 [WRN] Protocol error
kopete: WARNING: 10:28:09 [WRN] Your ICQ number is used from another location

[New Thread 16384 (LWP 8044)]
[New Thread 32769 (LWP 8062)]
0x4118ec14 in waitpid () from /lib/libpthread.so.0
#0  0x4118ec14 in waitpid () from /lib/libpthread.so.0
#1  0x40954d77 in KCrash::defaultCrashHandler(int) ()
   from /opt/kde/3.1.2/lib/libkdecore.so.4
#2  0x4118d929 in __pthread_sighandler () from /lib/libpthread.so.0
#3  <signal handler called>
#4  0x40e3aa5e in QSocket::sn_read(bool) ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#5  0x40f496ee in QSocket::qt_invoke(int, QUObject*) ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#6  0x40c9ba52 in QObject::activate_signal(QConnectionList*, QUObject*) ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#7  0x40c9bb03 in QObject::activate_signal(int, int) ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#8  0x40f2623d in QSocketNotifier::activated(int) ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#9  0x40cb3f34 in QSocketNotifier::event(QEvent*) ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#10 0x40c47a46 in QApplication::internalNotify(QObject*, QEvent*) ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#11 0x40c472ac in QApplication::notify(QObject*, QEvent*) ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#12 0x408e614c in KApplication::notify(QObject*, QEvent*) ()
   from /opt/kde/3.1.2/lib/libkdecore.so.4
#13 0x40c25e61 in QEventLoop::activateSocketNotifiers() ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#14 0x40c07505 in QEventLoop::processEvents(unsigned) ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#15 0x40c590bf in QEventLoop::enterLoop() ()
   from /opt/qt/3.1.2/lib/libqt-mt.so.3
#16 0x40c58f7c in QEventLoop::exec() () from /opt/qt/3.1.2/lib/libqt-mt.so.3
#17 0x40c47c40 in QApplication::exec() () from /opt/qt/3.1.2/lib/libqt-mt.so.3
#18 0x0805ddf8 in main ()
#19 0x412c84ed in __libc_start_main () from /lib/libc.so.6