There is no absolutely safe, no bug free browser made yet.
"it does require the user to visit a malicious site or click a link to executed. It came in 5 hours after the FF3 release, but since it affects previous versions, we wonder if the researcher was just sitting on it to be first. The Zero Day Initiative pays researchers for the exploits they submit."
Nuff said.
DOES ANYONE KNOW ABOUT THE FIREFOX 3 VULNERABILITY THAT WAS DESCOVERED 5 HOURS AFTER IT WAS RELEASED?IS ANYONE STILL USEING FIREFOX 3?IS IT SAFE TO USE?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic