I mean usually my memory available using sbsettings averages about 153MB-ish. With blackra1n, my average is like 175MB-ish. Reloading in Cydia and even resprings are quicker. It's definitely a noticeable change. I've been a loyal Dev-Team supporter, but I'm throughly impressed with Geohot's work. Why did I upgrade? To have the lastest "greatest" Apple software on my JesusPhone I guess. All my past updates were Dev-Team JBs, with the intent of "perserving my baseband" for resell-ability (I got $425 for my 8GB 3G, hell yeah!) later on when the next iPhone comes out... even though I'm a legit At$t customer. But they (Dev-Team) have been warning us jb'ers on basebands for the longest. I'm no hacker/cracker or anything, but as a full-fledged Geek, even I know nothing is impossible to crack/hack. Where there's a will, there's always a way in this digital world and I'm sure somebody or some team out there will make the "impossible" possible. Oh yeah, blackra1n is awesome by the way. Quick and easy. (Used Windows 7 Ultimate RC in Boot Camp, no probs) Hats off to Geohot. Dev-Team's got some competition.