I think it'll stay of the history without clearing it, I'm not 100% sure on that though. I -do- know that the high-resource-usage counter (where it says warning 1 of 3) should clear and start over internally at some point, although I'm not sure what the timeframe is for it resetting. It's nothing to worry about though - my own free hosting account has a suspension history with such reasons as "Automation testing," "whoops," "canadian bacon rules," and "This is why we can't have nice things."