bad, unknown, and missing signatures with apt

After getting apt installed, I ran apt-get update and then apt-get upgrade. After downloading a lot of things, the system returned the following errors... E: Error(s) while checking package signatures: 30 unsigned package(s) 9 package(s) with unknown signatures 0 package(s) with illegal/corrupted signatures What should I do at this point ? I am using the following in /etc/apt/sources.list rpm ftp://ftp.gwdg.de/pub/linux/suse/apt SuSE/9.1-i386 base update kde xfree86 mozilla suser-rbos usr-local-bin funktronics packman packman-i686 wine kde3-stable security Thanks, .:Thinker