I get disconnected around 10-30 seconds after I log in, receiving a 90000 error every time. I started playing again yesterday on a new computer and I've been having this problem since then. I used to play on a laptop with wireless connection, now I play on a desktop with a wired connection. I never had this problem on my old computer.

I'm in Norway and play on the Phoenix server, if that matters.

Edit: I should mention that I'm not having any problems with other online games when playing on this computer. No disconnects in WoW for instance.