that happened to me alote of times, with and without macro (only thing i use in ava btw) and the account its still not banned, at some point i searched forums at i found a post saying that was my antivirus (most likely avg, and it was) that was getting in conflict with my gameguard folder, after i added the gameguard folder to the exceptions list, deleted the gameguard folder, and load game again, it worked fine with no problems at all.
so yah, sorry if i am stupid, but for me it had nothing to do with the fact of me using macro or not, since it showed up prior time to the usage of macro