Hi, Almost all the games saves of my progress on my hard drive are gone. I don't delete any game save for a game I have played. The only two that haven't disappeared yet is Gears 2 and Fallout 3.
RE5, BioShock, Assassin's Creed, Vegas, Vegas 2, and many others. Just poof disappeared. I haven't played them in a while, but that's not a reason for them to go missing.

Any ideas? Has it happened to anyone?