I'm piggy-backing here, because I have a BB on Earthlink and am having the same problem, but maybe some different insights. I can go to my board, make posts and travel merrily around. Then, 15 minutes later, if I try to go back in - nada - I get a delay and a blank page. If I link to a specific topic, I can go directly there, but not to the topic list - most of the time. Sometimes the list and a topic or two will not come up. This is happening to other users. This is a board just for family - only 5 registered members so far and only 2 of us post much and the board has been up only a few weeks, but every post seems to bring the board down for a while. After reading this thread, I found that FTP-ing in and removing the "now" and "global" files corrects the problems immediately, but it does not last. I think that the problems might be occurring only when posts are against a private or restricted topic.

Using ver 6.3.0.1
Board Here