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# gpg --verify ./grsecurity-2.1.5-2.6.11.7-200504090838.patch.gz.sign
gpg: Signature made Sat Apr 9 08:38:03 2005 EDT using DSA key ID 4245D46A
gpg: Good signature from "Bradley Spengler (spender) <spender@grsecurity.net>"
gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.
Primary key fingerprint: 9F74 393D 7E7F FF3C 6500 E778 9879 B649 4245 D46A
Is the patch I've downloaded safe to use? This warning seems a bit scary.