i tried it(cleanmem) with windows7 and 64bt and it gave me a glitch in my meter about 1/4 of the way to the ding, since ive stripped this thing down to cooperate with WGT i think installing and running cleanmem just made things a slight bit worse, i will say it is a very slight glitch, but its there. so i think if someone was using more of the memory on their computer they might really benefit from using cleanmem to keep an eye on whats using memory that doesnt need to be doing so while playing WGT,............BTW if you inquire to WGT about the leaks from their end they tell you to go in the wgt game settings and set to lowest quality flash, and to turn off a few other options, after trying this the graphics went terrible and the ball was almost square, that is the fix they send, or maybe a link to this forum....