I tested installing the official installer using Wine on Linux. Removed the options for punkbuster and minimizer. Didn't cause a ban. Real PunkBuster does not cause issues with silent AC. Also, minimizer has no reason to detour engine. But can you please check if either option causes it. Or if you still get the ban even without those checked. Also be sure that you don't have some other AC process running you might have installed for ETPro or something. There has been plenty of such programs out there from plenty of sources.