apt-get update
Ign http://archive.canonical.com trusty InRelease                              
Hit http://repo.steampowered.com precise InRelease                             
Hit http://debian.drdteam.org stable InRelease                                 
Hit http://download.mono-project.com wheezy InRelease                          
Get:1 http://archive.canonical.com trusty Release.gpg [933 B]                  
Ign http://us.archive.ubuntu.com trusty InRelease                              
Ign http://extras.ubuntu.com trusty InRelease                                  
Hit http://download.mono-project.com wheezy/main i386 Packages                 
Get:2 http://us.archive.ubuntu.com trusty-updates InRelease [65.9 kB]          
Hit http://repo.steampowered.com precise/steam Sources                         
Hit http://debian.drdteam.org stable/multiverse i386 Packages                  
Get:3 http://archive.canonical.com trusty Release [9,359 B]                    
Get:4 http://extras.ubuntu.com trusty Release.gpg [72 B]                       
Hit http://repo.steampowered.com precise/steam amd64 Packages                  
Get:5 http://dl.google.com stable InRelease [1,487 B]                          
Hit http://extras.ubuntu.com trusty Release                                    
Hit http://repo.steampowered.com precise/steam i386 Packages                   
86% [5 InRelease gpgv 1,487 B] [2 InRelease 2,696 B/65.9 kB 4%] [3 Release 2,69Splitting up /var/lib/apt/lists/partial/dl.google.com_linux_chrome_deb_dists_stabIgn http://dl.google.com stable InRelease                                      
E: GPG error: http://dl.google.com stable InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)