Mayb this is the right place in the forums....
Vista RC1 is amazingly fast and seems to be completely different from what beta2 was... beta2 just sucked although later builds like pre-RC1 were pretty good, but have to say RC1 is as stable and fast like XP is today... I played all night with RC1 on my new Core 2 Duo PC without sleeping (Thats the 2nd continous day without sleep...and still not feeling sleepy)...
A lot of new features in the RC1 build 5600. These includes (list based on my favorites) :
1.) The LUA messsages dont appear. In earlier versions, copy-pasting a file would mean clicking on 5 "yes" buttons...Now its just one!! (Thanks GOD!!)
2.) .Net Framework 3.0 (was called WinFX earlier). So the .xaml files can be compiled directly without installing the SDK...
3.) Faster startup (faster than XP)
4.) Nice sidebar... newer components in sidebar... Also sidebar has become more responsive
5.) Faster DirectX performance....means faster games....Earlier on my card (9800pro) games like HL2, Doom3 would stutter at times, now its smooth.
6.) Media Center has improved a lot. Mayb the drivers or what, but now the movies dont stutter and its faster... A lot more drivers are now supported in Vista.
These are just a few features that I found improve in Vista RC1... It'll be available in a weeks time for public download. RC1 is a real stable and very good build. I think it can now become a daily-desktop for a lot of ppl who wanna shift from XP!!