First off. Firefox has a security update that just came out. Minor update, but you should still upgrade to Firefox 1.0.5. Nice to see they are on top of things.
Also, Download Squad is reporting that you can run Firefox, Thunderbird and other Mozilla applications off a portable flash drive! How cool is that?! Now you can take your favorite browser or email client with you wherever you go. No need to install it on computers that you don’t have privileges to. Haven’t tried out Portable Firefox myself, but it sounds very cool. Ohh… someone just pointed out that it’s PC only. 🙁 Oh well. Still sounds cool and can’t be that hard to do on a Mac. 😉