apt-get 404

**shop-s1**

Warning: Permanently added '52.11.187.44' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 12.04.3 LTS (GNU/Linux 3.2.0-92-virtual x86_64)

 * Documentation:  https://help.ubuntu.com/

jaimef@shop-s1:~$ sudo /usr/local/bin/new-apt-mirror 
Converted from http://mirrors.liquidweb.com/ubuntu/ to http://mirror.math.ucdavis.edu/ubuntu/ successfully
jaimef@shop-s1:~$ sudo apt-get update
Hit http://apt.datadoghq.com stable Release.gpg
Hit http://apt.datadoghq.com stable Release                                                          
Hit http://apt.datadoghq.com stable/main amd64 Packages                                              
Hit http://apt.datadoghq.com stable/main i386 Packages                                               
Ign http://apt.datadoghq.com stable/main TranslationIndex                                            
Ign http://apt.datadoghq.com stable/main Translation-en_US                                           
Ign http://apt.datadoghq.com stable/main Translation-en                                              
Get:1 http://mirror.math.ucdavis.edu precise Release.gpg [198 B]                                    
Get:2 http://mirror.math.ucdavis.edu precise-updates Release.gpg [198 B]         
Get:3 http://mirror.math.ucdavis.edu precise Release [49.6 kB]
Hit http://ppa.launchpad.net precise Release.gpg                                               
Get:4 http://mirror.math.ucdavis.edu precise-updates Release [196 kB] 
Hit http://security.ubuntu.com precise-security Release.gpg                  
Get:5 http://mirror.math.ucdavis.edu precise/main Sources [934 kB]           
Hit http://ppa.launchpad.net precise Release.gpg                             
Hit http://security.ubuntu.com precise-security Release                      
Get:6 http://mirror.math.ucdavis.edu precise/universe Sources [5,019 kB]                    
Hit http://ppa.launchpad.net precise Release                                                         
Hit http://security.ubuntu.com precise-security/main Sources                                         
Hit http://ppa.launchpad.net precise Release                                                         
Hit http://ppa.launchpad.net precise/main amd64 Packages                                             
Get:7 http://mirror.math.ucdavis.edu precise/main amd64 Packages [1,273 kB]                         
Hit http://security.ubuntu.com precise-security/main amd64 Packages                                  
Hit http://ppa.launchpad.net precise/main i386 Packages                                              
Get:8 http://mirror.math.ucdavis.edu precise/universe amd64 Packages [4,786 kB]                      
Hit http://security.ubuntu.com precise-security/universe amd64 Packages                              
Hit http://ppa.launchpad.net precise/main TranslationIndex                                           
Hit http://security.ubuntu.com precise-security/main i386 Packages                                   
Hit http://ppa.launchpad.net precise/main amd64 Packages                                             
Hit http://security.ubuntu.com precise-security/universe i386 Packages                               
Hit http://ppa.launchpad.net precise/main i386 Packages                                              
Get:9 http://mirror.math.ucdavis.edu precise/main i386 Packages [1,274 kB]                           
Get:10 http://mirror.math.ucdavis.edu precise/universe i386 Packages [4,796 kB]                      
Hit http://ppa.launchpad.net precise/main TranslationIndex                                           
Hit http://security.ubuntu.com precise-security/main TranslationIndex                                
Hit http://ppa.launchpad.net precise/main Translation-en                                             
Hit http://security.ubuntu.com precise-security/universe TranslationIndex                            
Hit http://ppa.launchpad.net precise/main Translation-en                                             
Get:11 http://mirror.math.ucdavis.edu precise/main TranslationIndex [3,706 B]                        
Get:12 http://mirror.math.ucdavis.edu precise/universe TranslationIndex [2,922 B]
Get:13 http://mirror.math.ucdavis.edu precise-updates/main Sources [495 kB]
Hit http://security.ubuntu.com precise-security/main Translation-en            
Get:14 http://mirror.math.ucdavis.edu precise-updates/universe Sources [124 kB]                  
Get:15 http://mirror.math.ucdavis.edu precise-updates/main amd64 Packages [973 kB]                   
Get:16 http://mirror.math.ucdavis.edu precise-updates/universe amd64 Packages [272 kB]               
Hit http://security.ubuntu.com precise-security/universe Translation-en         
Get:17 http://mirror.math.ucdavis.edu precise-updates/main i386 Packages [1,034 kB]
Get:18 http://mirror.math.ucdavis.edu precise-updates/universe i386 Packages [281 kB]                
Get:19 http://mirror.math.ucdavis.edu precise-updates/main TranslationIndex [10.6 kB]
Err http://security.ubuntu.com precise-security/universe Sources       
  404  Not Found [IP: 91.189.92.200 80]
Get:20 http://mirror.math.ucdavis.edu precise-updates/universe TranslationIndex [8,333 B]
Get:21 http://mirror.math.ucdavis.edu precise/main Translation-en [726 kB]
Get:22 http://mirror.math.ucdavis.edu precise/universe Translation-en [3,341 kB]
Get:23 http://mirror.math.ucdavis.edu precise-updates/main Translation-en [411 kB]
Get:24 http://mirror.math.ucdavis.edu precise-updates/universe Translation-en [163 kB]
Fetched 26.2 MB in 5s (4,521 kB/s)                               
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/universe/source/Sources  404  Not Found [IP: 91.189.92.200 80]

E: Some index files failed to download. They have been ignored, or old ones used instead.
jaimef@shop-s1:~$ cd /^C
jaimef@shop-s1:~$ sudo su -
root@shop-s1:~# apt-get refresh
E: Invalid operation refresh
root@shop-s1:~# apt-get clean
root@shop-s1:~#