When I tried to post a question this morning on Stack Overflow using Firefox 3.6 on Mac OS X 10.6, I could not proceed to the actual form because the link never showed up. The only reason I can tell you guys right now is because I'm using Chrome.
I think I know what has caused this (although I couldn't reproduce it); if I'm correct this will be fixed in the next build.
Please let us know if you still see this tomorrow. Thanks!