The only official response, from Bashiok, is startlingly familiar:
We’ve extensively tested for false positive situations, including replicating system setups for those who have posted claiming they were banned unfairly. We’ve not found any situations that could produce a false positive, have found that the circumstances for which they were banned were clear and accurate, and we are extremely confident in our findings.
Playing the game on Linux, although not officially supported, will not get you banned – cheating will.
I can almost guarantee that they won’t provide any useful feedback to the banned users that could help them nail it down.
So, any EA/Bioshock haters, be sure to wash your hands before helping yourself to a plateful of crow, if you for some reason thought this wouldn’t happen in the fair lands of the Blizzard.
No shoving, plenty for everyone.