I'm not quite sure what the problem is. My cookie handing is correct. They work fine for Windows (Netscape, IE) and Linux (Netscape and Konqueror.)

Turn off cookies for the Mac. Preview won't work. Your membership stuff might be a bit odd. Logging in won't really do much, but you can still post. I tried to fix this with sessions the other day, but with the page cache the way it is, I had to stop and undo all my work. If found a big sticking point. Cookies will be around for a little while longer. I do plan on getting rid of the requirement if I can.

-Eric ;-)