A quick nerd-note. Since upgrading to my new laptop, which came with the new version of the Mac OS, Leopard, I've been stymied by the fact that drop-down menus don't always work in FireFox. Basically, select form elements on a lot of sites (including Basecamp, which we use for work) don't drop-down when you click them. You can still switch the settings using the arrow keys, but this is unpredictable and a pain.
Anyway, leaning on my ever-expanding reach of A-list contacts, I hit up Mr. Ponderer and he pointed me to the nightly build ftp spot. The 2.0.0.10 package has dropdowns working fine and isn't unstable in any other ways I've observed yet. Plus, you can run some pre-release software, which is worth at least two or three geek credits.
So, just in case anyone has this problem. Maybe google will send them here and find a solution.