I can access it from Safari but not Firefox on my newer Mac. On an older Mac it it won't access it from either browser (both older browsers, as they're not supported for that Mac any more). My Firefox on the newer Mac is up to date... I bought it up to 4.0.1 the other day. (Having said that, I notice there's a Firefox Beta 5 out!)
When a browser is banning me, it doesn't even give me the option to log on. Funny, I was going to check access on Safari on this computer once again, and forgot I was already sitting here typing a message to the Caedes discussion forum!
I switched from IE to Firefox and I was able to log on, but with not many here to interact with, it isn't much fun anyway. I wasn't logged out and closed Firefox and when I came back to it, I was still logged on.???
Searching for 'all users banned from site' on Bing brings up a few interesting results. One thread says people who are logged out can't log back in (though Cindy proves us wrong on that?) whereas those who weren't logged out in the first place can log in. It happened to a chat forum. They didn't seem to know how it happened. It may have had something to do with a 'conversion'? (Not sure what that means. ;-) )
Try to stay logged on or clear your cache and keep attempting to log on until the issue is cleared up!
Good luck,
mimi