Question about how to secure the signing key

[Faramir]

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Well, I was reading some old messages of this list (from 2004), and saw
something about it would be possible to steal the public part of a
signing subkey... the solution was:

"The fix is fairly simple conceptually.  Just have the signing subkey
issue a signature on the primary key."

 And, since I made a signing subkey, I'd like to know if I need to do
something to issue that signature, or if it was done automatically by
gpg. The key was created using gpg 1.4.9, so maybe that problem was
solved a lot of time ago... or maybe it still require some user action...

 Best Regards
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