florian@FLO:~$ sudo apt-get update
Hole:1 http://de.packages.medibuntu.org gutsy Release.gpg [189B]
Hole:2 http://security.ubuntu.com gutsy-security Release.gpg [189B]            
Ign http://security.ubuntu.com gutsy-security/universe Translation-de          
Hole:3 http://archive.ubuntu.com gutsy Release.gpg [191B]                      
OK   http://archive.ubuntu.com gutsy/main Translation-de                       
Hole:4 http://archive.canonical.com gutsy Release.gpg [191B]                   
Ign http://archive.canonical.com gutsy/partner Translation-de                  
Ign http://security.ubuntu.com gutsy-security/main Translation-de              
Ign http://security.ubuntu.com gutsy-security/multiverse Translation-de        
Ign http://security.ubuntu.com gutsy-security/restricted Translation-de        
OK   http://archive.ubuntu.com gutsy/universe Translation-de                   
OK   http://archive.ubuntu.com gutsy/restricted Translation-de                 
OK   http://archive.ubuntu.com gutsy/multiverse Translation-de                 
Hole:5 http://archive.ubuntu.com gutsy-updates Release.gpg [189B]              
Ign http://archive.ubuntu.com gutsy-updates/universe Translation-de            
Ign http://archive.ubuntu.com gutsy-updates/main Translation-de                
Ign http://archive.ubuntu.com gutsy-updates/multiverse Translation-de          
Ign http://archive.ubuntu.com gutsy-updates/restricted Translation-de          
Hole:6 http://archive.canonical.com gutsy Release [6998B]                      
OK   http://security.ubuntu.com gutsy-security Release                         
Ign http://de.packages.medibuntu.org gutsy/free Translation-de                 
OK   http://archive.ubuntu.com gutsy Release                  
OK   http://archive.ubuntu.com gutsy-updates Release                           
OK   http://security.ubuntu.com gutsy-security/universe Packages               
OK   http://archive.ubuntu.com gutsy/main Packages                             
OK   http://archive.ubuntu.com gutsy/universe Packages                         
OK   http://archive.ubuntu.com gutsy/restricted Packages                       
Ign http://de.packages.medibuntu.org gutsy/non-free Translation-de             
Hole:7 http://de.packages.medibuntu.org gutsy Release [11,7kB]                 
OK   http://security.ubuntu.com gutsy-security/main Packages                   
OK   http://security.ubuntu.com gutsy-security/multiverse Packages             
OK   http://security.ubuntu.com gutsy-security/restricted Packages             
Hole:8 http://archive.canonical.com gutsy/partner Packages [3613B]             
OK   http://archive.ubuntu.com gutsy/multiverse Packages                       
OK   http://archive.ubuntu.com gutsy/universe Sources                          
OK   http://archive.ubuntu.com gutsy/main Sources                              
OK   http://archive.ubuntu.com gutsy/multiverse Sources                        
OK   http://security.ubuntu.com gutsy-security/universe Sources                
OK   http://security.ubuntu.com gutsy-security/main Sources                    
OK   http://security.ubuntu.com gutsy-security/multiverse Sources              
OK   http://security.ubuntu.com gutsy-security/restricted Sources              
OK   http://archive.ubuntu.com gutsy/restricted Sources                        
OK   http://archive.ubuntu.com gutsy-updates/universe Packages                 
OK   http://archive.ubuntu.com gutsy-updates/main Packages                     
OK   http://archive.ubuntu.com gutsy-updates/multiverse Packages               
OK   http://archive.ubuntu.com gutsy-updates/restricted Packages               
OK   http://archive.ubuntu.com gutsy-updates/universe Sources                  
Hole:9 http://archive.canonical.com gutsy/partner Sources [1483B]              
Ign http://de.packages.medibuntu.org gutsy Release                             
OK   http://archive.ubuntu.com gutsy-updates/main Sources 
OK   http://archive.ubuntu.com gutsy-updates/multiverse Sources
OK   http://archive.ubuntu.com gutsy-updates/restricted Sources
Hole:10 http://de.packages.medibuntu.org gutsy/free Packages [6720B]
Hole:11 http://de.packages.medibuntu.org gutsy/non-free Packages [3702B]
Es wurden 34,6kB in 0s geholt (36,8kB/s)
Paketlisten werden gelesen... Fertig
W: GPG error: http://de.packages.medibuntu.org gutsy Release: Die folgenden Signaturen konnten nicht überprüft werden, weil ihr öffentlicher Schlüssel nicht verfügbar ist: NO_PUBKEY 2EBC26B60C5A2783
W: Probieren Sie „apt-get update“, um diese Probleme zu korrigieren.