You can see if you can find the exception here:

   Tools > Options > Advanced > Encryption: Certificates > View Certificates : Servers 

Rename or delete the file cert_override.txt (cert_override.txt.old) in the Firefox Profile Folder to remove all permanent exceptions that you have saved.

That option only exists in the desktop version of firefox. Firefox mobile on android only has 3 options in the tools menu none of which are to do with certificates.

The only way to reset the saved security information is to uninstall and reinstall Firefox for Android. This will remove all your saved information such as bookmarks, history, passwords, cookies, etc.

Somehow thought that would be the case :-).

It does seem a bit harsh. Is a port of the dekstop certificate management stuff anywhere on the horizon.

It is a real pain trying to sort out certificate management issues without it.

Thanks anyway!

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