The current version of Firefox does not work on the latest Aurora builds.

The error console says that it's because some variables, like Enum are reserved identifiers.

I tried fiddling around with things, but couldn't get anything to work.

Firefox 5's beta hits the web today, and the full release should be next month, so can you please see to it that Fast Dial gets updated?

I have nightmares of waking to up see that it is not working. :D