R40 memory

I have R39 and R40 open last night doing many things in both for about 4 hours. I saw that R40 was using consistently 1 to 2 gigs less ram. I didnt really find many hitches, but they happened on occasion during combat. I didnt have any crash's (my R39 crashed once zoning, but that is still really really really rare now, maybe 5 times since persistence. All in all, pretty good. I'll try to open if for a few hours tonight.