Hangs at log in.

Was playing gw fine all day, then popped out for a hour.
Came back and fire up gw and enter log in details press ok and it just hangs with the pop up box saying connecting! Lights on router are not doing anything.
Assumed was just a lot of people using the factions weekend so it was slow so left it.
Internet and other games are still functioning as normal.
Fired up the other pc and that one connects fine so i am puzzled.
Did a repair installation with the gw discs and that didnt solve it.

well i deleted the .dat file and fresh installed it and its running fine now... Oh apart from the fact im having to re download about 1gb of stuff before i can play it again... always a good idea to make your game files just 1 big damn file that you cant get into to fix/replace corrupt files