[Banzai]

I would suggest that you re-install Firefox and install all the necessary plug-ins you need. That is if you are using Firefox right now. If that fails, just try a different web browser such as Opera, IE or maybe Google Chrome. If you have important bookmarks you don't want to loose I also think you should save the links in a text file just in case they don't come back if you do decide to re-install Firefox (If that's what your using).