Which OS do you use?

I use windows 7 duel boot with ubuntu.
I like vista better than 7 though. Dunno why. Vistas just more me
 
I love Windows 7! Simply the best it is :)

I might also install XP again.
 
I have two computers, the older computer has Windows XP Professional and the newer laptop has Windows Vista Home Premium.
 
Linux, it is a very stable Operating System and is really nice to use imo.
 
At the moment I am using W7 ultimate I am happy with w7 so far used it for like 1 year on and off
 
i am using Windows 7 Ultimate right now.. but i'm planning to completely migrate to Xubuntu 10.4
 
I use windows 7 pro 64 bits.
I have 85 GB hard drive
and 4 Gb of RAM
 

its like ubuntu.. but its more user friendly i think.. and lighter because it is using XFCE Desktop Environment.
 
I currently use Windows XP SP3. I love it becasue XP is probably the most stable platform of the windows series. But, yet, I am getting more familiar with Windows 7 Professional. And, I have to say, I'm liking it. But, also, we all know if you're familiar with one thing, going to a new thing is very stange. But, I have to say, I don't really like the folder layout in Windows 7.
 
Windows 7 64 bit. I would like to switch to XP, but i'm just too lazy.