Alternatively, you may prefer to use `mml-secure-message-sign-pgpmime` instead
of `mml-secure-sign-pgpmime` to sign the whole message instead of just one
part.
+
+### Troubleshooting message-mode gpg support
+
+- If you have trouble with expired subkeys, you may have encounted
+ emacs bug #7931. This is fixed in git commit 301ea744c on
+ 2011-02-02. Note that if you have the Debian package easypg
+ installed, it will shadow the fixed version of easypg included with
+ emacs.