Mozilla Firefox 10 released few days back , this release is a stable version release. So, you can install it without any problems like crashing or bugs. This version released as silent update, so if you are already using firefox , your firefox browser (v9 or later) will be automatically updated to version 10.
Changelog :
# - The forward button is now hidden until you navigate back
# - Anti-Aliasing for WebGL is now implemented
# - Full Screen APIs allow you to build a web application that runs full screen
# - CSS3 3D-Transforms are now supported
# - Newelement for bi-directional text isolation, along with supporting CSS properties
# - Inspect tool with content highlighting, includes new CSS Style Inspector
# - added IndexedDB APIs
Another major advantage of this version is that, you can use any Add-On released for Mozilla Firefox v4.0 or later in this version. You can download it from here# - The forward button is now hidden until you navigate back
# - Anti-Aliasing for WebGL is now implemented
# - Full Screen APIs allow you to build a web application that runs full screen
# - CSS3 3D-Transforms are now supported
# - Newelement for bi-directional text isolation, along with supporting CSS properties
# - Inspect tool with content highlighting, includes new CSS Style Inspector
# - added IndexedDB APIs