kernel install-checksig errors

[Harry G]

Using Suse 7.3  current kernel 2.4.10

Downloaded 2.4.16 from Suse site. Ran rpm -v --checksig (as user) and 
got the following:

harrycg at linux:~/dloads/kernel> rpm -v --checksig 
kernel-source-2.4.16.SuSE-24.i386.rpm
kernel-source-2.4.16.SuSE-24.i386.rpm:
MD5 sum OK: 49f713ff038083344572ddc3c127b2b1
gpg: Warning: using insecure memory!
gpg: Signature made Wed 19 Dec 2001 02:49:23 PM EST using DSA key ID 
9C800ACA
gpg: Can't check signature: public key not found

Being this is the first time I am trying to upgrade the kernel, the 
insecure memory and public key not found errors concern me.  Obviously, 
I don't want to continue until I understand this.  (If you have seen my 
other posts, you know that I am still a newbie, and have a real 
tendency to screw up things.  Should have been a politician).

Anyone able to help here?


TIA

Harry G