There are some issues, for sure. I clicked the Quote button to quote you, but it just opened up a "Reply to Thread" without quoting you. You're not alone:
What was happening for me is it wouldn't log me in unless I checked the "Remember me" checkbox. If that box was unchecked, it would just cycle back around as if I hadn't just entered my name & password.
Seems to be fixed now. To test, I removed all cookies in browser, left "Remember me" unchecked, and the login worked.
I've been having some slowdowns in page loadings, mostly avatars. Resetting the cache and switching browsers doesn't seem to help. I've also noticed that the JavaScript powered menu, like the thread tools menu, are not working via JS. Instead they are working as if I don't have JS enabled by opening.
Edit: I seem to have fixed the JavaScript issues by restarting FireFox. But some threads still have strange problems fully loading images and avatars.