509 Bandwidth Limit Exceeded---What is this?

October 27, 2009 3:55pm CST
Hi mylotters! Does anyone of you knows what "509 Bandwidth Limit exceeded" means? I been trying to login to a certain PTC site but this is what I am getting everytime I went to their site. It also said that the server is temporarily unvailable to service my request due to site owner reaching his/her bandwidth limit... It has been 2 days already. Can anyone please explain this to me. Thanks! I would really appreciate.