For all of you with Vista, I've just installed the latest release candidate for Vista Service Pack 1 onto my Dell XPS M1330.
So far there hasn't been too much of a change,but performance wise, it is using less Memory (about 1451Mb of my 4Gb - used to be up around 1600Mb). So far I haven't found anything in the new Service Pack that is going to screw anything up. Just general work within Vista does seem to run a bit quicker, there used to be brief pauses when opening up the control panel and my documents, but that has disappeared. When something crashes the CTRL+ALT+DEL happens almost instantaneously rather than waiting for up to a minute for something to happen.
Both Creative MP3 players work, my Garmin iQue M4 works, Canon EOS350D works and so does the Epson C87 works fine.
I will be interested to see whether there are any other new things they've changed with the Final Release when it comes out in a couple of weeks.