i noticed that by killing hibernation things started to speed up too. you may also wanna try turning off all the rest of the ms security crap. vista cant really be used as a main os atm so there's no need for them. get something like avg free and leave win firewall on, that should be all the protection you need really, especially if you are using a router as a hardware firewall. in fact if your router has a decent firewall you may as well turn of win firewall altogether. i have a 1.8Ghz 64-bit turion w/1GB ram and Ati Xpress 200m (128MB shared). Vista 5308 runs quite nicely when u tweak it a bit. still a bit slow tho but hey, its only a beta BTW, how cool is Win+Tab!!