Adobe released an update to Flash on February 15th to address an exploit that affected Internet Exploiter users. Even if you don’t use IE, you should still update your Flash plugins. Also this would a good time to check on the ‘health’ of your other Firefox plugins. You can do this from within Firefox by going to Tools > Add-ons and then clicking the link Check to see if your plugins are up to date. This will open the Mozilla plugin checker site in a new tab where a quick scan will tell you which plugins needs to be updated.