Since 2 weeks, every time i open my mozilla firefox browser, there is 2 tab open. The first one is Google (i want this one) and i got a second tab Avast (security) and if i go into my options browser, my homepage is set to Google and i can’t see avast to stop hit to open because i didn’t need it.
Thanks

Please use the search option on this webboard before posting.
This issue has been addressed many times before.
Here is just one of the many threads about it :
http://forum.avast.com/index.php?topic=148337.0