Hey Darko 

I've got the same problem and when you look around the web, loads of people are having the same problem.  

Until now I broke the WL and now the rivals aswell 

Cant finish a game , and when you lose the connection before the game is recorded and you get a loss for it. 

I've sent my UO trace yesterday , my connection is fine, both wifi and wired. 

The problem has occured since the new patch