Problems multitabling

[AmonRaa]

So I finally got myself second Samsung 214T monitor. My god, it is so sweet.
But to my problem. Processor is 3GB, RAM 1GB, video ATi 9800 Pro. I used to 9 table on Party with resize tables np, but now I cant open more than 5 tables on Prima. I mean it opens, I am seated but I cant see the graphics. Its just blurred with other window. Beside those tables I run PT, AceHUD, Opera and Winamp. Is it possible that video card is too weak? What else could be a problem. Like I said, table opens and I am seated but I cant see the content of that table, 5 tables are running fine.