Since I updated java to the latest version "something"-40 I cant connect to the server. While connecting the little ball that goes round and round stops, the whole game freeze and is like so for 6-30 seconds. When coming back from the freeze it says "Lost connection to GEWALTIG.net".

Every now and then it doesn't freeze (maybe once in 15 tries) but then it instead tells me "Could not establish a network connection. Please check your firewall configuration".

Any suggestions on what I should try to do to fix it?