You mean do not allow rpg system?
Some hosts I had didn't care unless it caused cpu issues. The game used more cpu cycles the longer it went with out a reset so on some hosts I just reset it once a month. I actually did that up until the day I stopped using it. Which I think was about 2 years ago. Just looked and yep we stopped using it as of July 2011, which I guess is actually less then 2 years.
I was using vps at that time. So I guess it was not that long ago that I was able to go back to shared. I am so glad to be able to go back to shared though. It is so much cheaper.