UPDATE: Can log in now. Cleared browser cookies, but have no idea if that's a coincidence or not.

I seem to have hit some kind of bug signing up:

1. Filled out signup form, hit enter.

  > Page reloaded, sign-up form empty. No other feedback.

2. Filled out signup form again, hit enter.

  > Told username and email address taken.

3. Check email.

  > no new email.

4. Filled out login form using info entered in step 1.

  > Page reloaded, not logged in.