Some of us have enjoyed the advantages of Firefox ever since it was suggested to replace our ailing Explorer. Mozilla has now released their Beta 3 based on Gecko 1.9, which they have been working on for the last 30 months, after almost 2 million lines of code changing. They are now encouraging feedback for those who are brave enough to download it. After some initial testing and bug correction, they are planning on Release Candidate versions. If you have no fear, back up what you have now, check out their notes, download, and report back to Bugzilla if you run into complications.