JUST INSTALLED LINUX MINT 9 (64bit) and it's working fine so far. As I've begun, I continue to dual boot it with win7.
This is my desktop. I'll play with the wallpapers and appearance later on after I finish installing other programs I need. By the way, this version has a back up tool that's supposed to back up even programs already installed so that in the next upgrade, they won't have to be searched for and re-installed once more :)