A new virus is making its way around the community called Graveyard. The virus does a rather unwelcoming thing of humping your Borderlands 2 save file and then dumps a lot of the data so that once you die you lose your character, stats and everything else, forever. There is no way to recover your data but some modders might be able to cure your save file if you're willing to take a few steps to let them remedy the problem.
The Better Gaming Bureau (and I really like that name. I hope they live up to it!) has done gaming a great service today of announcing that the Graveyard virus is spreading like wildfire. The reports confirm that save files for PC and Xbox 360 are converted to Graveyard.sav files and will ruin your stats for good once you die. So your choice is either to never die or get your save file fixed by a modder. The upside is that PS3 gamers have not encountered this virus, yet.
As noted on GameFaqs by user Dranaxscas...
What is graveyard.sav? What does this have to do with me?
Oh snap...that is some righteous fail pie right there and a whole bunch of people just chomped down on a big 'ole slice of it.
Gearbox hasn't made mention of this yet and there's no telling if the virus was deliberate (given the name “Graveyard” it kind of hints at it being deliberate) but this case here will sadly be used by a lot of publishers to further move away from mod support.
Nevertheless, if you value your savegame be sure to make a backup copy on a USB stick or something. And if your save file was penetrated by that pesky Graveyard violator, well...it's best to just put your save file out of its misery by taking it out behind the shed.