Folding works fine, as good as it's gonna get when I start it up, but after a while, which varies, the folding slows WAY down. The AMD Duron 1.35ghz running chip takes about 2 hours 10 minutes per step on one of the current 100 step gromacs, and then all of a sudden took 19 hours and 30 minutes and looks to be continuing at this speed. I had noticed this to happen when I was fully into folding about a year and more ago and it irritated me then. Anyway, I decided to get going again a little, and am noticing this. I think it has something to do with the cpu instruction sets, like 3dnow. Anyone know the answer? I ONLY run the "no nonsense text only" version.