Firefox users may have noticed they had to upgrade their browser over the weekend. Why did every Firefox user on the planet need this essential upgrade? Because Farmville was broken.
It seems the previous update was causing problems with the Facebook game, users around the world complaining they were no longer able to play Farmville because a bug "hangs the browser long enough for [a]timeout to trigger and kill it".
The current version gets around this by increasing the amount of time required to "kill" an application while Mozilla work on a more lasting solution.
So the world's second most popular internet browser is updated just to fix a single game. If for some reason you hadn't realised just how big this game is until now, this should do it.
FarmVille Bug Helps Prompt Firefox Update [Gamasutra]