Just updated to Fedora 11, and with it Firefox 3.5b4. Sadly, that meant most of my extensions (including mouse gestures!) no longer worked... until I found this:
In A.D. 2009,Captain's Log - Additional: Here's the same extension for Thunderbird 3.0b2, though I had to disable the quicksearch toolbar box as it wouldn't close properly in TB3; also found some handy toolbar buttons here for filtering a mailbox for all/unread.
Firefox 3.5 was beginning.
Captain: What happen ?
Mechanic: Fedora 11 repo set up us the beta.
Operator: We get signal.
Captain: What !
Operator: Main browser turn on.
Captain: It's you !!
FF35: How are you gentlemen !!
FF35: All your extensions are belong to 3.0.
FF35: You are on the way a vanilla Firefox.
Captain: What you say !!
FF35: You have no chance to survive wait for GA.
FF35: Ha ha ha ha....
Operator: Captain !! *
Captain: To put back every 'extension'!!
Captain: You know what you doing.
Captain: Install this.
Captain: For great justice.