Hi,bei mir das gleiche Problem ich habe NIE gecheatet,habe nicht einen Crack/Hack/oder anderen Dreck auf dem PC und ganz bestimmt auch keine Trojaner etc.
Nachdem ich den Battleye Support angeschrieben habe,kam nur folgendes zurück: x(
Hi,
your ban is valid and therefore won't be lifted. If you didn't cheat, then you are either using a shared cd-key (sold by certain fraudulent entities/companies for a cheap price) that was used for cheating or someone managed to steal your cd-key by getting access to your system (via cd-key stealers, there is a news post about this issue on battleye.com) and either replaced your actual cd-key with a banned one, or cheated with it and got it banned now. Even if your actual cd-key isn't banned yet (you can check that by removing your current cd-key from the registry and reinstalling the game), it will likely be banned soon. Note that there is nothing BE can do about others getting access to your system and stealing personal data such as your cd-key, that's entirely your own responsibility. It's technically not possible for hackers to steal your cd-key in-game though.
The only way to get unbanned and be able to play on BE servers again is to buy a new copy or cd-key of the game (ArmA 2: Operation Arrowhead). Otherwise you can still play on BE-disabled servers. Please understand that no further details about your ban can be revealed and no further instructions on how to get unbanned can be provided.