I had vista home edition on my laptop, but the disc doesn't work to restore it. So I installed one of my unused copies of Vista Ultimate (retail) and it's running out of ram constantly now. I disabled the nice vista skin, that helped, but what in the heck? I mean it's the same computer as before, now it constantly crashes. Is there some service that is using ram on Ultimate that I could disable? I see I'm using about 800mb of the 2gb of ram on this computer, right at boot. No idea how much ram home edition was using at boot though.