I'm still on XP. I got burned by Vista so now I'm hesitant to even try Windows 7. I'm just going to stick with what works lol.
I use XP service pack 3 and think it's Ok. Not going to update to 7 yet, will wait for the first major update.
I used windows vista for some days. Finally I came to windows XP professional. It is working fine. I like it.
I have windows XP & have 1GB RAM ,360GB HARD DISK AND 2.0GHZ PROCESSOR(DUAL CORE) & with DVD writter.