DICE has announced that the issue with their anti-cheating software, PunkBuster for Battlefield 3, has been resolved and PC gamers that were wrongfully banned will have their access reinstated. DICE took time to post this on their battlelog message board.

"Together with the 3rd party service providers we have taken steps to remove the faulty bans, and improve the protection against future fake bans.
We have determined that the root cause resulting in the server bans is not directly related to Battlefield 3, but rather related to select 3rd party services which server owners can use in conjunction with PunkBuster to protect their servers.

If you are able to log in to Battlelog, your account has not been banned by EA or DICE so there is no need to contact Customer Support."

Dice has resolved the issue, it is 100% Win7 compatible, and I promise I won't jizz in your mouth. Once more, the three greatest lies in the world.