Right now I can't reach on Windows or Ubuntu, but when it was working earlier, for what it's worth at least, it was working ok in FF3 on Windows.
There was an slight hiccup the first time I opened it, where everything was in plaintext like the CSS was switched off, but that seems to be resolved now. I'll write that one off as you possibly tinkering with the site as I was loading it.
On Ubuntu FF3 it gives me this error if it's any help:
code:
uncaught exception: script.aculo.us requires the Prototype JavaScript framework >= 1.4.0