Open saucers who have been using Wine to play  Diablo III on the Blizzard servers have been branded cheats.

Linux users have been banned from Blizzard and told that they cannot use their accounts to play Diablo III any more. The problem has been caused because Diablo III's cheat detection system is detecting Wine as a way to cheat. Blizzard is refusing to refund the money or unban the accounts which are banned.

It has told users that they are not allowed to use a “third party program” to gain an unfair advantage. In the case of the Linux Wine combination that unfair advantage might be the fact that they are getting use out of softwar that they have paid for. No one can see how Wine or Linux could provide anyone with an unfair advantage, other than the fact that they didn't pay anything for the operating system.

There is a thread on this on Wine forums and Linux users fuming.