Lost saves

[mheil]

I'm a newbie on my first patrol. Made four kills, did my patrol grid and was heading back to base with only one torp left in the stern. I ran in to a lone ship and was setting up for a stern shot when the wife wanted to use the computer. I made a save and exit. Returned to the game o few hours later to find all my saves missing from my career?!? Any ideas? I tried to find the save folder to see if it was empty but didn't know where to look. I'd hate to start all over again.