Firefox 7 has been released.
Download or update within the program (Help > About Firefox > Check for updates). Release notes.
-Drastically improved memory handling for certain use cases
-Added a new rendering backend to speed up Canvas operations on Windows systems
-Bookmark and password changes now sync almost instantly when using Firefox Sync
-The ‘http://’ URL prefix is now hidden by default
-Added support for text-overflow: ellipsis
-Added support for the Web Timing specification
-Enhanced support for MathML
-The WebSocket protocol has been updated from version 7 to version 8
-Added an opt-in system for users to send performance data back to Mozilla to improve future versions of Firefox
-Fixed several stability issues
-Fixed several security issues