Although I’ve switched to Google Chrome as my primary web browser, I still switch over Firefox every once in a while for one reason or another.
With the recent release of Firefox 3.6 you might find some of your favorite add-ons no longer in working because they haven’t yet been updated to support the new version number.
You can easily get around this limitation by installing the Nightly Tester Tools Firefox Add-on which allows you to override the maximum version the add-ons say they can support.
Keep in mind, even though you are forcing your add-ons to run with your current browser version it doesn’t mean they will work, but usually I find that they do work just fine.
I’m a sucker for running the latest and greatest build of Firefox so the Nightly Tester Tools Firefox Add-on is a must for me.
I tend to use the Portable Versions of Firefox so they are sandboxed in their own little folders. That way I can also have several versions on my box for testing.
As a total side-note, but related point I also like these following Portable Applications that you can find from the same site…