O Solo Mio
Inspired by Lesley's conversion to Firefox, I decided to try it myself. I believe I am ready to abandon the experiment in favor of Opera.
Firefox is a good brower, better than IE, and I could never go back to IE now, but it has some annoying quirks. At least on my machine. For some reason, I can't use the middle mouse button to "wheel" up and down through pages, and it constantly struggles when opening links in new windows. They hang, take so long to load that I give up thinking they've hung, or it puts some crazy javascript:newwind extension in front of the web address, making a blank page load.
I am testing out Opera as we speak, and indeed it seems better. No more problems with opening links in new pages. It is a little more cumbersome - for example, control + click doesn't work to open pop ups, and instead you have to click on another link - I can't find "bugmenot" software, which enables me to bypass registration for annnoying sites that require registration, and it has banner ads unless you pay. Yet, I am impressed enough right now to continue using it, and maybe eventually to pay for it.