Abut flash-plugin recently, thit might help if anyone else see this:
If Firefox say you have not latest flash, but you do have latest flash-plugin: uninstall & reinstall
I seems on some systems a reinstall of flash-player-plugin & flash-player-plugin-kde is needed.
(maybe systems that ran mga5 when it was cauldron. Also, this system was updated mga4->cauldron->mga5)
I realised yesterday that Firefox blocks flash.
http://www.adobe.com/software/flash/about/ say i have version 11,2,202,540 installed, BUT
https://www.mozilla.org/en-US/plugincheck/ say i have version 11.2.202.535 installed. Strange!
.540 is the version of mageia flash packages flash-player-plugin & flash-player-plugin-kde, and latest official today.
I have closed restarted firefox and my system.
AFAIK i have done nothing unusual regarding flash or browsers.
I have chromium-browser installed also if that might interfere.
I uninstall packages flash-player-plugin & flash-player-plugin-kde and restart Firefox, and both checks above say i have no flash.
I install packages flash-player-plugin & flash-player-plugin-kde and restart Firefox, and now both checks above say i have version .540

I note in repos there is now .460 and .540 but not .535, so i guess this system have gotten it in the mga5 cauldron phase?
Strange that different websites got different flash versions run!
I guess that it is installed in at least two places, and earlier only one got updated.
At home & work Mandriva since 2006, Mageia 2011. Thinkpad T40, T43, T60, T400, T510, Dell M4400, M6300, Acer Aspire 7. Workstation using LVM, LUKS, VirtualBox, BOINC