Strange behaviour of installation source

I just added a normal, selfmade YaST installtion source to 10.1, using the Add-on-Produkt module. There was one selection on the media. If I choose selections in YaST, the selection is not displayed does YaST only display signed selections? If I switch the view to installation sources, I can choose packages for installtion and this also seems to work. But I can not install newer versions of packages, which are already installed (tried with kaffeine 0.8.1) any idea, what's the reason for this? -- Mit freundlichen Grüßen, Marcel Hilzinger Linux New Media AG Süskindstr. 4 D-81929 München Tel: +49 (89) 99 34 11 0 Fax: +49 (89) 99 34 11 99