If I update firefox 7 will disable my free youtube freestudio, so I will not update at this time.

If I update firefox 7 will disable my free youtube freestudio menu1.0.4 so I will not update at this time. I get this message that some of my add ons won't work, & will be disabled with this update. Also it says my yahoo toolbar will be disabled also. Firefox 6 works perfectly for me... I don't need to fix anything with it. How do I stop getting the update msgs. I will update of course when I can keep my youtube freestudio. I don't choose to disable it. I may have to switch to Chrome or back to internet explorer then.. Let me know your thoughts. I am happy with firefox, the way it is right now. I have no problems with it  :) Cyrus