Since the release of the latest nightly builds 2.10a1 (rv:13.0a1) on Feb 01 the Adobe flash player plugin does not work correctly on some sites. This bug exists also in the latest nightly build of Firefox (13.0a1). Especially on the following sites the flash player plugin does not work any more: http://speedtest.net/ http://www.jumpradio.de/web/programm/inhalt/index.shtml https://www.tipp24.com/webshop/product/lottonormal/horoscope.htm But on other sites (and also on the Adobe test site http://www.adobe.com/software/flash/about/ ) the flash player plugin still works correctly. As this behaviour does not show up with nightly builds 2.09a1 there must be a minor bug in the actual nightly builds 2.10a1.

DUP: Bug 723154 - Some Flash objects don't work if content policies (Adblock Plus, NoScript, GreaseMonkey etc.) are present