@differentdog: What are you talking about? I've been trying the betas and I've officially switched to Firefox 3 Beta 5 (I still like calling it Gran Paradiso. Awesome name) and it has only crashed when I decided to try using some of my older extensions (Tab Mix Plus and Greasemeonkey...) and since I removed those about:config values, it hasn't happened again. But then again, I'm on Ubuntu and I have seen videos of it crashing on YouTube, though it was always Windows... Are you running Windows?