Hi! I also have this kind of problem since Sunday, 12th January.
I logged in and had to download a terrain (can't say wich) and after the download I was never able to log in to MA again!
I'm prompted to the pissa map, get two "Lost UDP connection switched to TCP" messages on buffer and a error screen stating "Host connection lost" and SHABAM, here I go, CTD!
I log to CA, download whatever I have to and it all works fine...Don't understand this...
Any help?
Sparrow