Comment 70 for bug 24061

People who added to this bug report had a number of different issues.
1. Some people did not import the relevant keys. For them, something like "sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys DB141E2302FDF932" solved their problem.
2. Some people had bad files on the local box (through proxy or direct download) and for them the fix was "sudo mv /var/lib/apt/lists /var/lib/apt/lists.old ; sudo mkdir -p /var/lib/apt/lists/partial"
3. Some had bad cached content on a normal, by-passable proxy. For them, the fix is "sudo aptitude -o Acquire::http::No-Cache=True -o Acquire::BrokenProxy=true update"
4. Some had transparent Proxy authentication problems, which cannot be fixed in ubuntu. (authenticating fixed it for the user)
5. Some had transparent proxy problems with bad cached content on the proxy, which can't be fixed in ubuntu. (changing the mirror, so that the url did not match what the proxy had cached, fixed this.

It's a long bug report. I might have missed a different kind of problem or two, but for everyone the symptoms looked the same (that's how they got here).

I don't see how this bug could possibly be fixed for all the different root causes listed here and if you close this bug, the information for some of these problems will essentially be lost.

Is there a better place to document this and help people find their specific problem?