Cant join

[IraAten]

The last two day I have had problems joining a server. I go through the login process OK but when the server list comes up everything almost stops, the pointer moves around in jerks and even if I get it on to a server I want to join nothing happens. During this time the boxes on the left of the server list are not working either. I have left it for quite a long time in this state but it does not improve. I managed to host a game and play as a single player and when that finished all was OK, the server list was back to normal. I played several games but then had to leave for a time and when I went to go back in the problem was there again and now I cannot even host a game. All my other games are working fine i.e: COD4, MOHAirborne, Battlefield 2 etc. but I still prefer JO, I have been playing on I.C.E mod by the way and have tried all the other mods but they are all the same.
I am running a Asrock 939 Dual Sata MOBO
AMD dual core 2.2 ghz cpu
ATI Radeon 3850 512 GPU
2 gb ram