mismatch

Hello, When I try to install 'factory', I get a message, something like this: 'Boot CD and installation source mismatch Your bugreports are probably worthless' I have an up to date full mirror of factory on my Pegasos PPC at home. I use the supplied boot.ppc.iso and SL-OSS-factory/inst-source as my installation source. Is it normal, or I should file a bugreport? Bye, Peter