pyicq-t-0.7a has problems with umlauts in nickname

Hi!

I'm using pyicq-t-0.7a on a jabber 1.4 server with psi 0.10 as client. 
When an ICQ user has a umlaut (äöüÄÖÜ) in his nickname and I want to 
retrieve the user info then pyicqt crashes with the following error:

------
ICQ connection lost! Reason: [Failure instance: Traceback: 
exceptions.UnicodeDecodeError, 'utf8' codec can't decode bytes in 
position 1-4: invalid data
]

Michael