Solving Firefox crash/hang with Flash plugin

It has been several weeks that I disabled flash plugin because it crashes my firefox. I have updated my firefox to version 14, and my flash plugin to the latest one. It does not help. The only workable solution that I found was to disable the protected mode of Adobe Flash. After I did that, flash no longer hangs/crash my firefox. This is how to do it:

  1. Edit mms.cfg file. For my case it is located at: C:\Windows\System32\Macromed\Flash
  2. Then, add this line: ProtectedMode=0
  3. Save, and restart firefox.

The more detailed troubleshooting is given here: