MSN not working, Native MSN Messenger is on same machine

I don’t really know how to get started on debugging this. Can somebody throw me a bone?

From my debug log:

TOP

2008.11.24 19:30:38 MSN: Session messageReceived for my_msn_user@hotmail.com : CVR 2 8.1.0178 8.1.0178 8.1.0178 http://msgruser.dlservice.microsoft.com/download/5/6/4/5646481F-33EF-4B08-AF00-4 904F7677B89/EN/Install_WLMessenger.exe http://get.live.com

2008.11.24 19:30:38 session 63 received message XFR 3 NS 207.46.110.54:1863 0 207.46.96.154:1863

2008.11.24 19:30:38 session 63 closed
2008.11.24 19:30:38 MSN: Session closed for my_msn_user@hotmail.com
2008.11.24 19:30:38 MSN: Session messageReceived for my_msn_user@hotmail.com : XFR 3 NS 207.46.110.54:1863 0 207.46.96.154:1863

2008.11.24 19:30:38 session 64 established
2008.11.24 19:30:38 MSN: Session established for my_msn_user@hotmail.com
2008.11.24 19:30:38 session 64 sent message VER 1 MSNP11 CVR0

2008.11.24 19:30:38 MSN: Session messageSent for my_msn_user@hotmail.com : VER 1 MSNP11 CVR0

2008.11.24 19:30:38 session 64 sent message CVR 2 0x0409 winnt 5.1 i386 MSNMSGR 8.1.0178 MSMSGS my_msn_user@hotmail.com

2008.11.24 19:30:38 MSN: Session messageSent for my_msn_user@hotmail.com : CVR 2 0x0409 winnt 5.1 i386 MSNMSGR 8.1.0178 MSMSGS my_msn_user@hotmail.com

2008.11.24 19:30:38 session 64 sent message USR 3 TWN I my_msn_user@hotmail.com

2008.11.24 19:30:38 MSN: Session messageSent for my_msn_user@hotmail.com : USR 3 TWN I my_msn_user@hotmail.com

2008.11.24 19:30:38 session 64 received message VER 1 MSNP11

2008.11.24 19:30:38 MSN: Session messageReceived for my_msn_user@hotmail.com : VER 1 MSNP11

2008.11.24 19:30:39 session 64 received message CVR 2 8.1.0178 8.1.0178 8.1.0178 http://msgruser.dlservice.microsoft.com/download/5/6/4/5646481F-33EF-4B08-AF00-4 904F7677B89/EN/Install_WLMessenger.exe http://get.live.com

2008.11.24 19:30:39 MSN: Session messageReceived for my_msn_user@hotmail.com : CVR 2 8.1.0178 8.1.0178 8.1.0178 http://msgruser.dlservice.microsoft.com/download/5/6/4/5646481F-33EF-4B08-AF00-4 904F7677B89/EN/Install_WLMessenger.exe http://get.live.com

2008.11.24 19:30:39 session 64 received message USR 3 TWN S ct=1227526238,rver=5.5.4177.0,wp=FS_40SEC_0_COMPACT,lc=1033,id=507,ru=http:%2F% 2Fmessenger.msn.com,tw=0,kpp=1,kv=4,ver=2.1.6000.1,rn=1lgjBfIL,tpf=b0735e3a873df b5e75054465196398e0

2008.11.24 19:30:39 MSN: Session messageReceived for my_msn_user@hotmail.com : USR 3 TWN S ct=1227526238,rver=5.5.4177.0,wp=FS_40SEC_0_COMPACT,lc=1033,id=507,ru=http:%2F% 2Fmessenger.msn.com,tw=0,kpp=1,kv=4,ver=2.1.6000.1,rn=1lgjBfIL,tpf=b0735e3a873df b5e75054465196398e0

2008.11.24 19:30:39 MSN: Exception occurred for my_msn_user@hotmail.com : java.net.SocketException: org.jivesoftware.util.SimpleSSLSocketFactory
2008.11.24 19:30:39 MSN: IO error: java.net.SocketException: org.jivesoftware.util.SimpleSSLSocketFactory
2008.11.24 19:30:39 Disconnecting session stefan@jabber.mydomain.com from msn.jabber.mydomain.com
2008.11.24 19:30:39 session 64 closed
2008.11.24 19:30:39 msn: Sending packet:
2008.11.24 19:30:39 msn: Sending packet: You were disconnected from the MSN service.

END

Help?!

Stefan