YaST 2 Online Update Problem?

I've just installed SuSE 8.0 from DVD. All went well (great work SuSE). So first thing to do was an on-line update via ftp. However, while downloading the patches YaST complains on every patch: "Cannoton check patch [whatever] because the GPG package because the GPG package is not installed or the package diescription is corrupted." I've checked and GPG is installed. What's up? -- Simon Oliver