Well I finally downloaded Firefox 2.0 and installed it.
Just for my reference, I backed up my whole PC and then just doubled clicked the Firefox Setup 2.0.exe file and ran the installer. I did not remove my 220.127.116.11 version or any of its components first.
The installer ran in less than a minute and when Firefox started up I found that everything worked must faster, and that my installed extensions (now called add ons) worked with no problems.
In regards to add-ons, I particularly like that Firefox now restarts itself, with my permission of course, and then immediately I have access to the add-on. This is much simpler and quicker than the previous versions.
All of my bookmarks and prior settings seem to have come out OK. If upon further use, any problems turn up, I will let you know about them through this blog.
All in all, I am quite impressed with the improvements I have seen so far.
I can not compare this to the new Internet Explorer 7, as I have not yet installed or tried it. I very seldom, need to use IE anymore for anything and do not even have it at work yet.
For now, I think that I will stay with my current Firefox Portable 18.104.22.168, as 2.0 is only in release candidate stages at this time, but when Firefox Portable 2.0 is put out as a full version I intend to switch over to that also.
Let me know about your experiences with Firefox 2.0, good or bad, by leaving a comment to this post.