It looks like a few folks are dealing with a rather serious issue in Gearbox Software's just released shooter Borderlands. 1Up.com reports that all three versions of the game have a bug that can set back player's skill and weapons points back to zero while either joining or leaving a multiplayer match. This issue is apparently only affecting a few players at this point.

Gearbox is apparently aware of the problem and is working on a fix. A post on their message board states, "Unfortunately there isn't a fix just yet, but when one is available we hope to be able to repair as much of your character data as possible." In the meantime we would suggest just playing the game in single player if you don't want to risk losing your character progression.