So, I can't find my main Oblivion folder. I go to the usual spot (Program Files/Bethesda) but all I can see is the "Oblivion Mods" folder. Game still plays as usual. No files are lost then, it's just not there . . . the only thing I changed since the last time I saw it was I turned of antialiasing, started the game, and took my first couple of screenshots.
Went to look for them, and the folder is gone.
EDIT: Just restarted . . . and the Bethesda folder is gone too! What's happening??