I've used "Firefox" since Mosaic, then Netscape, then Mozilla Firefox. But, damn, more and more Firefox bogs down on me (and I have few, if any add-ons installed). Flash was locking it up, and I'm keeping it disabled unless I particularly want it on, and animated GIFs seem to bog it down. Othertimes it just seems to bog down - I assume a memory resource leak - and a restart fixes it. Sometimes not.
I'm loyal to the heir of the first browser, but frankly am ready to trade - same quandry when I had to abandon Borland for M$oft (but that was a business decision).
Alas, although I know it's open source, I'm not in a position to fix it myself.
Anyone else hanging in there, know what the bog down is, or what are people doing? I know I'm not the only one with this issue.