I haven't seen it yet. *crosses fingers* Firefox on XP and SuSe.
The longer the "update" is here, the less functional it seems to get. I know it's more secure, but erratic functionality and torqued off users is worse IMPO.
EDIT: HTMLSpinner, please don't take that personally. I know it isn't you, it's the software. I think UBB might be pushing it out the door before it is debugged. Or are we actually doing pre-release testing?