[_dave_]

OK, def not running out of RAM then I would hope [img]/images/graemlins/smile.gif[/img] And if that's a 2.4GHz Core2duo, I can't imagine it is the CPU either... similar spec to mine.

Maybe drawing the boxes is more "expensive" on Vista, what with the fancy interface - do you have Aero enabled? is "Disable Desktop Composition" checked for PokerStars?

There is an easy enough way to reduce performance impact to a quarter if need be, depending on how many sides of the box you want coloured?

Hopefully reducing the update frequency will be enough tho... unless you'd rather just have a single side highlighted on each player?