What’s Up With Firefox?

Having recently been in a situation where I was forced to use Internet Explorer 6, a browser which was released over 10 years ago, and is now in version 9, I couldn’t help but think: What is up with Firefox? They just released version 4 this year, and now they’re at version 7. How do you release 4 versions of a browser in less than 10 months?*

Mozilla abandons Firefox 3.6 upgrade…

*yes, I know there’s a logical explanation that has something to with how their update system works. But regardless: I just thought they were gonna blow my mind with some amazing feature I couldn’t even imagine, when they pushed v7 on me in a hurry! I don’t even remember when they auto-updated me to v6!