HiHO...
DSA key ID 9C800ACA
I cannot find it on any key servers or via google/etc. Might be nice of SuSE to share ;)
try this:
=> gpg --recv-keys 9C800ACA
gpg: Warning: using insecure memory!
gpg: requesting key 9C800ACA from wwwkeys.de.pgp.net ...
gpg: key 9C800ACA: public key imported
gpg: Total number processed: 1
gpg: imported: 1
=> gpg --list-keys 9C800ACA
gpg: Warning: using insecure memory!
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key