When I accepted a game invite from my buddy today on Steam, the game started up and I noticed that all of my settings were reset. The audio was way too loud, and my keybindings were back to the default. I still had my guy and all his guns were in place, but it seemed to revert. Then I hit Escape and was greeted with "Congratulations! A save file for Borderlands 1 blah blah blah" appeared...again...I've already been past that screen.
I had 4 keys previously, and now I only have one. What the hell happened?