Windows 7: Problem regarding firefox 8 tabs

Hello. When I first open Firefox many Tabs with "Install Add-on" are open. The screen shows a message "Another program on your computer would like to modify Firefox with the following" On each tab a different Add-on is referred to. This happens after i close computer, and then turn it on, or even after i log off and then log on again. How can I stop this happening?

reinstall firefox but keep your settings and themes addons etc, it will give you the option to keep them when you re install over the existing ff,

Did that, reinstalled firefox, even downloaded again the kit from the server. Same problem. Then, i installed firefox 7, and i did not get this problem. Also, this problem occurs on firefox 9 beta as well. So i guess it is just for firefox 8 and 9. If there are no answers to this strange bug i am having on firefox 8/9, i think i will remain with firefox 7.

fair enough,

Still, I wonder where the problem is for firefox 8.... why in firefox 7 i do not get this error, while in the 8 i get.