If I click 'continue' terrible things happen. Firefox either won't start (and it wouldn't start for about 3 tries) or if a window is open, firefox will freeze up. If I click 'stop script', I get another pop-up message: what happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefined I can only click 'ok' and firefox soon opens. Maybe unrelated, I think I have a problem with flash. I have a yahoo home page that includes a comic strip 'app'. It now takes over a minute to load where it used to take maybe 20 seconds. This may have happened with the latest big update with firefox (but I'm not sure). I have checked for plugin updates and the checker upper often says I need a flash update or I come across a website that says I need to update this plugin. When I went to go download the most recent update for flash today, the links to download only took me the same page I was on. No download.