Capita una cosa strana con ubuntu

[kidy]

Allora!ho visto una cosa per me strana ,ma non ? detto che lo sia poi veramente!
ho installato la dapper e poi 7.10 su di un muletto celeron 800 e mi da sempre lo stesso problema,ovvero una volta installato vado per fare l'aggiornamento dei pachetti e mi dasempre questo errore:
root@ubuntus:~# apt-get update
Get:1 http://security.ubuntu.com gutsy-security Release.gpg [191B]
Ign http://security.ubuntu.com gutsy-security/main Translation-it
Ign http://security.ubuntu.com gutsy-security/restricted Translation-it
Ign http://security.ubuntu.com gutsy-security/universe Translation-it
Ign http://security.ubuntu.com gutsy-security/multiverse Translation-it
Hit http://security.ubuntu.com gutsy-security Release
Get:2 http://it.archive.ubuntu.com gutsy Release.gpg [191B]
Err http://security.ubuntu.com gutsy-security Release                                   
 
Hit http://it.archive.ubuntu.com gutsy/main Translation-it                             
Get:3 http://security.ubuntu.com gutsy-security Release [51,2kB]                           
Hit http://it.archive.ubuntu.com gutsy/restricted Translation-it                                 
Hit http://it.archive.ubuntu.com gutsy/universe Translation-it                                     
Ign http://security.ubuntu.com gutsy-security Release                                               
Hit http://it.archive.ubuntu.com gutsy/multiverse Translation-it
Hit http://security.ubuntu.com gutsy-security/main Packages                                 
Get:4 http://it.archive.ubuntu.com gutsy-updates Release.gpg [191B]                         
Hit http://security.ubuntu.com gutsy-security/restricted Packages                           
Hit http://security.ubuntu.com gutsy-security/main Sources                                 
Hit http://security.ubuntu.com gutsy-security/restricted Sources                           
Hit http://security.ubuntu.com gutsy-security/universe Packages                             
Hit http://security.ubuntu.com gutsy-security/universe Sources                             
Hit http://security.ubuntu.com gutsy-security/multiverse Packages                           
Hit http://security.ubuntu.com gutsy-security/multiverse Sources                           
Ign http://it.archive.ubuntu.com gutsy-updates/main Translation-it                         
Ign http://it.archive.ubuntu.com gutsy-updates/restricted Translation-it
Ign http://it.archive.ubuntu.com gutsy-updates/universe Translation-it
Ign http://it.archive.ubuntu.com gutsy-updates/multiverse Translation-it
Hit http://it.archive.ubuntu.com gutsy Release                     
Hit http://it.archive.ubuntu.com gutsy-updates Release                                 
Get:5 http://it.archive.ubuntu.com gutsy Release [65,9kB]                               
Ign http://it.archive.ubuntu.com gutsy Release                                           
Get:6 http://it.archive.ubuntu.com gutsy-updates Release [58,5kB]                         
Ign http://it.archive.ubuntu.com gutsy-updates Release                                   
Hit http://it.archive.ubuntu.com gutsy/main Packages                                     
Hit http://it.archive.ubuntu.com gutsy/restricted Packages         
Hit http://it.archive.ubuntu.com gutsy/main Sources               
Hit http://it.archive.ubuntu.com gutsy/restricted Sources         
Hit http://it.archive.ubuntu.com gutsy/universe Packages           
Hit http://it.archive.ubuntu.com gutsy/universe Sources           
Hit http://it.archive.ubuntu.com gutsy/multiverse Packages         
Hit http://it.archive.ubuntu.com gutsy/multiverse Sources         
Hit http://it.archive.ubuntu.com gutsy-updates/main Packages       
Hit http://it.archive.ubuntu.com gutsy-updates/restricted Packages
Hit http://it.archive.ubuntu.com gutsy-updates/main Sources       
Hit http://it.archive.ubuntu.com gutsy-updates/restricted Sources 
Hit http://it.archive.ubuntu.com gutsy-updates/universe Packages   
Hit http://it.archive.ubuntu.com gutsy-updates/universe Sources   
Hit http://it.archive.ubuntu.com gutsy-updates/multiverse Packages
Hit http://it.archive.ubuntu.com gutsy-updates/multiverse Sources 
Scaricato 176kB in 3s (44,2kB/s)                                   
Lettura della lista dei pacchetti in corso... Fatto
W: GPG error: http://security.ubuntu.com gutsy-security Release: Errore sconosciuto durante l'esecuzione di gpgv
W: GPG error: http://it.archive.ubuntu.com gutsy Release: Errore sconosciuto durante l'esecuzione di gpgv
W: GPG error: http://it.archive.ubuntu.com