as far as security goes vista is better, but it still has some compatibilities issues with older programs. There is a lot of junk running in vista. i know when i had the trial version i disabled the security center, the firewall, and some crap i never used, but i never managed to get it to run as good as XP. I think that if you right click on properties on the exe file you can chose to run the program in comaptibilty mode for XP. So far xp is the best of MS, and i am sure vista will become once service pack 1 comes out.
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