I noticed the startup time increase myself. I don't know if it has anything to do with it, but the Beta didn't recognize my other hard drive for some reason, and now this one does. Also seems slower in general than the Beta, although it's about the same, maybe a little faster (startup is faster for sure) than XP, so I would imagine Vista users would still see a speed increase.
Also this weird stuff where, coming out of sleep mode, my computer gives me this coming-out-of-a-coma kinda thing where I can move my cursor around, but the active program won't react at all. I float over the close window button, it won't glow. It's weird, like the computer still recognizes input from my mouse and probably my keyboard, but the program won't. It goes away after about 10-15 seconds, and hasn't given me any big problems yet, but I just don't get it. XP never gave me that, with SP1, 2, or 3. The W7 Beta didn't give me that. Also, it seems to happen or not happen randomly when just the screen goes to sleep, too.