These days we are experiencing "This Account Has Exceeded Its CPU Quota" in these forums. We apologize for these errors and we are doing our best to solve them.
Acording to Bluehost hosting company (where these forums are hosted) these errors should not happen anymore:
http://mattheaton.com/?p=119
but the fact is that we keep having them. We have REPAIR and OPTIMIZE the tables that the forums use, but we keep having the problem. We appreciate your feedback.