about:configinto Firefox's address bar and click the "I'll be careful, I promise!" button.
- Right-click anywhere. Choose New>Boolean. Make the name of your new config value
extensions.checkCompatibilityand set it to
- Make another new boolean pair called
extensions.checkUpdateSecurityand set the value to
- Restart Firefox.
All goes well, and any extensions that aren't yet officially Firefox 3 Beta 3 compatible and don't have secure updates (like Better Gmail and friends) will be enabled. Final warning: These changes may lead to unexpected wacky behaviour. Proceed at your own risk! Thanks, BugMeNot21!