It has been a while since Firefox 3.6 was released, and Mozilla has delayed prompting users to upgrade from Firefox 3.5 to Firefox 3.6. However, starting today Firefox 3.5 users will be prompted to upgrade to Firefox 3.6.
Users will get this prompt only if the browser has been in idle state for 10 minutes or more. Users can also upgrade to Firefox 3.6 manually through the help menu.
If you are not too keen to upgrade to Firefox 3.6, the upgrade prompt will give you an option to deny the upgrade, however, you can always upgrade Firefox manually.
For the stats junkies, Firefox 3.6 has been downloaded over 115 million times, if you are not one of them, go ahead and upgrade to Firefox 3.6 right away.