dosn't matter how much they compress it, yes it would use alota cpu cycles, but I'm not sure that 100k keypresses takes very long at all and the cpu cycles are not a worry some thing, if I set my programs thread priority to minimal I'm fairly sure the culprit would stand out

oh if you think compressing will save their arse then I laugh, who said I'd let it run for a short duration? I'm talking 1 hour here.

oh and we're looking for RAM/HDD increases here not CPU, CPU flucuates to much, HDD is very stable if my program is the only thing running, and RAM can be monitored if you chart it ^_^