I heartily agree, DT! It only takes a movement of the cursor over the ad to start the wretched thing playing. This is an irritable invasion of privacy. Instead, 'Click to play' should be made mandatory on all such ads. Please do something, Ed!
I thought I was being clumsy but it keeps happening.
Like you DT, I mentally block them out and have no problem with the new layout but this slows down my typing finger as I have to stop and grab the mouse, and it will not always click off on the X button.
I turned the sound off on the ad but whenever it reappeared the sound was on again.
I've now had to mute my PC which i don'tlike doing as I like to put music on from time to time
Adblock is compatible with the latest version (10.0) of FF and if you are using FF3.6 then support for that is ending in April - so you might as well bite the bullet and get the latest version sooner rather than later.