Several months ago I upgraded to Firefox 10.0.1 and ever since I could not get any videos to play on Vimeo, just a blank space. Today I searched Google for a solution and found a recommendation that said to change the value for "dom.ipc.plugins.enabled.npswf32.dll" to "true" in Firefox about:config. This did not solve the problem and instead caused Firefox to freeze every time a flash video started to play on any site (e,g. YouTube). I then tried the following: - Changed the value back to "false", closed and re-opened Firefox - did not help - Updated the Flash plugin to the latest version - did not help - Uninstalled and reinstalled Firefox - did not help I had no problems playing flash videos before (with the exception of Vimeo, which never worked) and now, not only can I not play them, Firefox freezes every time one starts to play. What the heck is going on?

Using Firefox 10.0.1, Windows 7 64 bit