I posted a popular tip in the XP forum and the Browser forum about common FF speedups. The stock settings are very safe and not that fast.
In answer to your question. No.
Bob
I know firefox is better than MSIE. Still there are few problems. One of them which I feel very disgusting...
I see there is some problem in loading a page after some event. When I click a link, there is a delay transferring and receiving data from domain.
Do you all experience this?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic