Try just killing the Firefox or plugincontainer that is running instead of restarting the pc. * See [["Firefox is already running but is not responding" error message - How to fix it]] Why do you have two versions of Shockwave Flash shown as installed and also a shockwave for Director plugin. You quite possibly do not need the Director plugin at all, and should only have the latest Flash Player plugiin installed. * See also [[Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems]] (Note Internet Explorer will have a separate Flash Player plugin)