Modify your Google Toolbar to work with Firefox 1.5 RC1
It looks as though Google Toolbar for firefox now works with the latest versions of the browser. If you were holding off on downloading the beta versions of FireFox because you didn't want to lose your toolbar, you don't have to worry any longer.
FireFox 1.5 is beta, and with all beta software there are issues that need to be worked out. I have noticed very annoying copy + paste issues with the browser, but other than that it seems quite good.
So if you haven't yet and you are feeling adventurous, give FireFox + Google Toolbar a shot... you might like it!