I apologize for the accusation, it's just that I believe (or would like to hope) that "accidental bans" are in the very low minority. So that leaves people that are doing stuff that they're not supposed to be doing.

I forgot about the recent Flash hackery. It does sound like someone is keylogging you. With WoW being so popular this unfortunately may become a popular occurrence.

Do what Fursphere suggested and good luck.