Most of my family members don't care at all about the speed or standards compliance of a browser. The only comment I've heard in either direction? I switched from netscape because IE would let me change titlebar colors and my font. I have an in-law who browses the internet through IE in cursive. Firefox is a great browser (I'm an evangelist) but when my relatives are told by their work Intranet application, Bank website, or whatever it might be that their browser isn't supported they move back to IE and never look back.

Almost no problems with FF3 alpha 8 through RC1, I've installed these on a q6600 booting into Vista, XP, and several Linux flavors, I've also used several of the Beta's on a Mac (I've found more problem there) Right now I have 30+ tabs open, a select few plugins (a download manager, PDF tools, Chatzilla, etc.) maybe weekly FF3 will crash but in every case I was able to restore all of my data within a minute. I'm a big firebug fan but this browser is good enough that I'm willing to give up just about any plugin. FF3 is very fast, very clean, and very reliable.