[GD-Windows] XP2 slowdowns?

[Brett B. <res...@ga...>]

Hello,
We upgraded some of our development machines using XP to SP2 and the 
upgraded machines _sometimes_ run our game slower now. When I watch the 
processes while the game runs, the game frequently drops to 20-50% of CPU, 
with the windows idle occupying the other 50%, so our game is sometimes not 
consuming as much of the CPU as desired. Has anybody else noticed any speed 
problems with their games?
Thanks,
Brett