I moved from windows to linux about 6 months ago. I work in I.T. but dont consider myself a massive nerd.. more a geek.
Anyroad, Ive been using Ubuntu 7.10 and am more than happy with what I have found. I haven't had any problems other than syncing my N95 (which I have now done... kinda) and would recommend trying it if all you do is browse the net, send emails, listen to music, watch vids, use office documents and view/use photos. Its great and theres nothing I could do on XP that I cant do thru 'gutsy gibbon'.
You can try it by running it direct from CD before you decide to make any permanent changes. The Ubuntu variant is well supported too and is soon to release 8.04 Hardy Heron (Weds 23rd).
If you do have a look, let me know what you think. Its nice to have things running quickly and smoothly for a change.
SO ... I thought Id post this... as Ive read thru the forum and cant sleep so I have nothing better to do...
Oh, and its 'endorsed' by Samuel L and Nelson M.