Rated 3 out of 5 stars

Update works just fine.

Thank you for reacting so quickly!

edit (30-September-2012): I think it’s not working again (FF v. 15.0.1; add-on v. 1.0.3, YT HTML5 is off).

This review is for a previous version of the add-on (1.0.1.1-signed.1-signed). 

Rated 5 out of 5 stars

This is actually the first addon\script\whatever that was supposed to prevent Youtube autoplay and worked for me. I'm on v.13, btw.

This review is for a previous version of the add-on (0.2.91.1-signed.1-signed).