I have Adobe Flash Plugin v11.2r202 in Firefox 11.0, on Kubuntu 11.10 64-bit.
Flash works flawless on Youtube. However, certain websites claim that I need a more recent version of Flash Player. That is, of course, a wrong assumption. Because I have the latest version installed. Also, I tried Firefox add-on "flash aid". It didn't help.
For example, on this website: http://htwins.net/scale2/ It says "You need a more recent version of Adobe Flash Player."
Whereas in Chromium or Opera, it works.
about:plugins contains this information about flash content:
Shockwave Flash File: libflashplayer.so Version: Shockwave Flash 11.2 r202 MIME Type.....Description.....Suffixes application/x-shockwave-flash.....Shockwave Flash.....swf application/futuresplash.....FutureSplash Player.....spl
What is the problem there?