When I go to http://localhost:3000 Firefox tried to load the page but then adds #/signup over and over again to the url without displaying the signup page. Google Chrome seems to work but IE fails. I'm using Firefox 3.6.13 under windows and Ubuntu with the latest pfc running on Ubuntu.
This bug is still present, and it seems to be a showstopper for anyone using Firefox.
The commit that caused the bug: a2994ad
Use a different/better history manager, closed by bf8d2f4.