avast Online Security 9.0.2916.82 addon trouble

Hi not sure if I am posting this in the right area or not if so I am sorry

I have Avast free for years and love it …I am having a little bit of trouble with the Addon for Firexox
Avast Online Security 9.0.2916.82
I have run Avast, SuperAntispyware,Malwarebytes, and even AdwCleaner scans and all says clean even looked in Task scheduler to see if there was any strange programs and nothing only then I saw was Avast Emergency Update listed

but when I open firefox it opens a Advertisement for Avast Online Security on a extra tab along with my home page and it will not go away unless I turn the addon off I have checked my cookies , and checked my popup, home page options and still it is there when I open Firefox have Google it for help with it I love the addon makes me feel safer when I surf the net but would hate to have turn it off because it is annoying can any one give any other advise or fixes thank you very much for any help …

There are about a dozen threads here with variations on this theme. AOS is a dog. I disabled it ages ago. They tried to do too much with it.

Here’s just one thread on the subject:- http://forum.avast.com/index.php?topic=147838.0

Specifically, do you clear your cookies after every session?

Hey Paul
thanks for reading & helping and sending the link … I have tried both options with saving or / delete cookies and history but still have problems with both I finally gave up and uninstall the AOS from my firefox addon …what a shame it it would have been a good tool to have if it worked right

I have no problems with it on FF 28.