How I Fast Flash in Firefox on Ubunty Natty Jackalope

Ever since I upgraded to Ubuntu Natty Jackalope back in Crataegus oxycantha, I've been having issues with Flash in Firefox. Luckily, I don't really distrust on Flash for too large indefinite quantity, but present I needful to order a pizza, so the issue became vital. ;)
I'm no intruder to Flash issues on Linux, so I knew if I mamma around in the Ubuntu Forums I'd come across something facilitative. Sure sufficiency, I lost this thread, in which the succeeding commands were recommended for fastening the problem:
sudo apt-get get rid of --purify swfdec-mozilla mozilla-plugin-gnash flashplugin-nonfree adobe-flashplugin
sudo apt-get instal adobe-flashplugin
I ran the first command and lost that the cardinal packages I had installed were flashplugin-nonfree and swfdec-mozilla. They were some far by the command.
When I dependable the second command, I got the following:
Package adobe-flashplugin is not gettable, but is referred to by some other computer code. This Crataegus oxycantha mean that the computer code is wanting, has been obsoleted, or is solitary gettable from some other source.
My judge is that is fixed charge to the note in this post, which refers to needing to have the Rule "individual" sepulcher set up.
Before I looked into how to do that, I definite to fire up Firefox to see if it would present me with the derivative of instalment the plugin from there (seemed easier). However, I was pleasantly stunned to see that every of a jerky, aft solitary running the first of the cardinal same commands successfully, Flash was finally on the job fine again.
And present the pizza pie effigy is present. :)