Add-ons always needs re-install.The firefox maybe has conflict with bitdefender
When I restart the laptop,the add-ons for firefox 11 need re-install. It's always this situation. My laptop's OS is win7 and I have install bitdefender 2010. In china ,many users meet this problem. Someone said it because firefox has conflict with bitdefender. My English is poor. If you can reply with chinese words, that's prefect.
Wšykne wótegrona (1)
This can be caused by the virtualization feature that Bitdefender has.
You may need to uninstall Bitdefender if you can't disable that feature for Firefox.