Mozilla's Firefox version number inflation drive continues as it plays catch up with Google Chrome 13 and Internet Explorer 9. Released today, Firefox 9 packs small number of new features, improved font rendering, along with the usual load of security and bug fixes.

JavaScript processing has been updated massively.

Whats new in Firefox 9? In terms of noticeable features, practically nothing. However, its behind the scenes where Firefox development is currently being pushed, and version 9 introduces support for type inference, which in laymans terms means the browser is now capable of processing Javascript code much quicker up to 44 per cent quicker according to Mozillas own tests than previous versions, meaning that Javascript apps should be noticeably quicker to the end user.