GMail Issues with FF3? (Score 1, Offtopic)

I've had some significant issues on both my PC and Mac with FF3. They all seem to revolve around JavaScript. When in GMail, navigating away from GMail via a new site in the address bar in the same tab hangs FF3 entirely. This is on my Windows machine. When in Facebook on my Mac at home, clicking any of the various links that execute javascript popups for DHTML hangs the site. I can navigate through links that are more classic hrefs that instantiate other requests through the browser, but clicking on things like the Name of someone in their status just fails. Anyone else experience this?