Rick,
I have a moderator who is having this exact same problem, but just since getting a "new to her" PC. I have not had any other complaints lately about this happening to other members, but it did happen to me once while at a conference at a trade show. One PC was able to view our forums and the second 6 inches away was not. We got the same error message as the OP.
Could it be some sort of setting in the PC's that could be causing this. It's been over a week now and my Mod still can't get in!
Cheers!
Cara
Last edited by ladybug_mom; 02/04/2009 10:44 AM.