I'm a Mac user, and I couldn't get into the forums for a day or so earlier this week, but everything seems O.K. now.
The only problem is that the whole forums thing seems really slow in loading... and I'm on DSL. Sometimes, at night, I can't even get in, or have to try a bunch of times before I do. I'm a new user, and haven't visited on anything but a Mac, so I'm not sure if this is common problem with the site or if it's got to do with the Mac (shouldn't).
FYI, my system is a Mac G3/400, 896MB of RAM, running IE 5.0

Windoze: the Mac interface done in fingerpaint.