kopete crashes when close a tab

kopete crashes when close a tab (after a contact try to use a webcam). This is the first time that it happens.
I use Kubuntu Feisty Fawn with KDE 3.5.6 and this is the backtrace:

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Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1241564784 (LWP 5146)]
[KCrash handler]
#6 0x00000001 in ?? ()
#7 0xb5e18ef5 in P2P::Webcam::~Webcam () from /usr/lib/kde3/kopete_msn.so
#8 0xb6881717 in QObject::~QObject () from /usr/lib/libqt-mt.so.3
#9 0xb5a1fb3e in P2P::Dispatcher::~Dispatcher ()
   from /usr/lib/libkopete_msn_shared.so.0
#10 0xb6881717 in QObject::~QObject () from /usr/lib/libqt-mt.so.3
#11 0xb59ebd6a in MSNSocket::~MSNSocket ()
   from /usr/lib/libkopete_msn_shared.so.0
#12 0xb5a0cb6b in MSNSwitchBoardSocket::~MSNSwitchBoardSocket ()
   from /usr/lib/libkopete_msn_shared.so.0
#13 0xb6881717 in QObject::~QObject () from /usr/lib/libqt-mt.so.3
#14 0xb7e488ca in Kopete::ChatSession::~ChatSession ()
   from /usr/lib/libkopete.so.1
#15 0xb59f768d in MSNChatSession::~MSNChatSession ()
   from /usr/lib/libkopete_msn_shared.so.0
#16 0xb687cf54 in QObject::event () from /usr/lib/libqt-mt.so.3
#17 0xb6814a60 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#18 0xb681688f in QApplication::notify () from /usr/lib/libqt-mt.so.3
#19 0xb6fd8ce2 in KApplication::notify () from /usr/lib/libkdecore.so.4
#20 0xb67a71e9 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#21 0xb6815a98 in QApplication::sendPostedEvents ()
   from /usr/lib/libqt-mt.so.3
#22 0xb6815ba0 in QApplication::sendPostedEvents ()
   from /usr/lib/libqt-mt.so.3
#23 0xb67bb1f1 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#24 0xb682f136 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#25 0xb682ef46 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#26 0xb6816609 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#27 0x0807feec in ?? ()
#28 0xbff05864 in ?? ()
#29 0xbff0585c in ?? ()
#30 0xbff05854 in ?? ()
#31 0x00000000 in ?? ()