Seamonkey - the FF for the clued up folks
I'm just glad there is Seamonkey available, which doesn't treat you like a clueless newbie like IE and FF (as it wants to imitate IE) do.
For anyone frustrated with FF, try Seamonkey, same browsing engine as FF, therefore same extensions and plugins as FF, but much better UI, more configurable, and no useless cpu-consuming gimmicks.