It seems simple enough, why worry about the icons? But when in a rush, I like to have things in order so that I can find them quickly. The way that Vista re-orders them when I reboot is completely random. Every time I start my computer, the icons are in a different order. This happens whether Auto Arrange is turned on or off.
This may or may not be related, but vista also cant remember that I want my second monitor turned on. XP always did. When I am in my office, I hook my laptop up to a second monitor. With windows XP, I would just turn it on and it was ready to go. With vista, I have to go into the display properties and turn it on every single time. Its a minor thing, but having to do it every day for no apparent reason is really annoying.
I am still using RC2 and have every available update for my software and drivers.