Cannot get Flash to work in Firefox or Chromium, and cannot upgrade to 12.10 LTS

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http://askubuntu.com – I cannot get Flash to load for either Firefox or Chromium. So I tried updating to 12.10 LTS, but I do not show any distribution updates available. I'm running 12.04 LTS on another computer, and it not only works fine, but has been receiving updates over the last several days. Yet this computer does not show any. I have a hunch there are some missing updates, but I have not been able to find them. Any suggestions? Thanks! (HowTos)