Comment 8 for bug 1972

Celso: the $GNUPGHOME setup might be the issue. The GPGHandler.retrieveKey() code does the following:

 1. try to get key from local keyring
 2. if that fails, grab it from our keyserver

So if someone tries to add a sign-only key we'll cache that key in the app server's $GNUPGHOME. If the user adds an encryption key, waits for the keyserver to synchronise and tries to add it again, LP will still get the old cached version unless one of the following holds:

 * they hit a different app server (we have two now)
 * the app server process has been restarted (which creates a new $GNUPGHOME)

These two variables could indicate why the problem appears to be intermittent.