Still on XP... i have doubt about win7, it might be a flop like vista. XP rulz man. Faster, easier, hassle free.
You'll be downloading the RC not the beta, it's amazing - I use it! It's valid until summer next year so free windows for a year.
i am using Windows Vista Right now, just waiting for a stable Release from MC, then i will install it..
Windows 7 may be cool . However I don't want to reinstall my OS and I worry on the problem if all my apps work well in windows 7.