http://www.informationweek.com/story/showArticle.jhtml?articleID=160502333
The biggest fix in 1.0.3 will be to eliminate the JavaScript bug disclosed last week that leaves Firefox (and its Mozilla suite sibling) vulnerable to attack.
This one I'm gonna get when it's out.
Good for you. Next step: Service Pack 2
firefox 1.0+ > this shit
> this shit
what