Should only get limited if you are on < 50Mb and have downloaded x amount between 4-9.
Yeah, it was OK up until 2.5GB came down. Really pathetic tbh considering I never download anything apart from Steam games! They should operate a "credits" system rather that the current method which is quite unfair tbh. No way can I justify upgrading to 50MB - they wanted £75 activation and a load of extra cash!