Your flash verison is here:
http://kb2.adobe.com/cps/155/tn_15507.html
Uninstall flash first (you must close all the apps that use flash):
http://fpdownload.macromedia.com/get/flashplayer/current/uninstall_flash_player_osx.dmg
And install the new one:
http://fpdownload.macromedia.com/get/flashplayer/current/install_flash_player_osx_ub.dmg
Great, thanks.
All that shenanigans just to check if my Flash is up-to-date and update it (manually!) shows that Flash is stuck in the dark ages.