Aurora is version 9 of Firefox.  Firefox’s stable version is 7.0.1, and it already has a beta in progress which is Firefox version 8.  What after Aurora?  Well, there is a nightly built which has been bumped to version 10 of Firefox.  Confuse yet?  Don’t be, because if you’re a regular user of Firefox who only wants to play with the stablest version there is of Firefox, then Firefox version 7.0.1 will be perfect. So, what about Aurora?  According to sources, Aurora utilizes a new feature known as type inference to boost Javascript’s performance.  Regular users don’t really have to know what type inference is though, because it’s more of how one algorithm is able to smartly assign data types to particular variables.  According…