Party Poker Display Problem

[Olback]

I started playing on Party Poker again today and i experience this problem after playing for 10 minutes or so:

I am 4 tabling and suddently when i click on 1 of the bottom tables it decides to sit over the start menu/task bar. It then stays over it as do all of the other tables.

Is there anyway to fix this?
http://img98.imageshack.us/img98/1658/partyprob1sa.jpg

I should also mention that i am running Windows XP. i have tried uninstalling and reinstalling Party

and yes i know that those black lines around the edge are caused by having 'large fonts'