Comment 8 for bug 314637

Thanks for the tip George. I was also having trouble getting flashplugin-nonfree actually installed. Kept getting the "download or license refused". Per your hints, here are the steps I took to get it installed:

1) sudo dpkg-reconfigure debconf
   -- Selected GNOME frontend and "medium", although I imagine any settings would work
2) sudo rm -rf /var/cache/flashplugin-nonfree
   -- I'm not really sure if this step was necessary, but it removed the local cached version which may have been causing trouble
3) sudo aptitude reinstall flashplugin-nonfree
   -- Make sure the path to the local version is blank
   -- Accept the license
   -- Repeat

Afterwards, I could see in the terminal the the plugin was truely being downloaded from Adobe, and Flash is now working once again.