[ubuntu-it] problema apt-get update

[peus a tiscali.it]

salve,
da qualche tempo riscontro il seguente problema con il comando sudo 
apt-get update:

peus a andrea:~$ sudo apt-get update
Get:1 http://it.archive.ubuntu.com feisty Release.gpg [191B] 

Hit http://it.archive.ubuntu.com feisty/main Translation-it 

Hit http://it.archive.ubuntu.com feisty/universe Translation-it 

Hit http://it.archive.ubuntu.com feisty/restricted Translation-it 

Hit http://it.archive.ubuntu.com feisty/multiverse Translation-it 

Get:2 http://it.archive.ubuntu.com feisty-updates Release.gpg [191B] 

Ign http://it.archive.ubuntu.com feisty-updates/main Translation-it 

Get:3 http://wine.budgetdedicated.com feisty Release.gpg [191B] 

Ign http://wine.budgetdedicated.com feisty/main Translation-it 

Ign http://it.archive.ubuntu.com feisty-updates/universe Translation-it 

Ign http://it.archive.ubuntu.com feisty-updates/restricted 
Translation-it
Ign http://it.archive.ubuntu.com feisty-updates/multiverse 
Translation-it
Get:4 http://security.ubuntu.com feisty-security Release.gpg [191B] 

Ign http://security.ubuntu.com feisty-security/main Translation-it 

Hit http://it.archive.ubuntu.com feisty Release 

Hit http://it.archive.ubuntu.com feisty-updates Release 

Hit http://wine.budgetdedicated.com feisty Release 

Get:5 http://ubuntu.beryl-project.org feisty Release.gpg [191B] 

Ign http://security.ubuntu.com feisty-security/universe Translation-it 

Ign http://security.ubuntu.com feisty-security/restricted Translation-it 

Ign http://security.ubuntu.com feisty-security/multiverse Translation-it 

Hit http://security.ubuntu.com feisty-security Release 

Hit http://it.archive.ubuntu.com feisty/main Packages 

Ign http://wine.budgetdedicated.com feisty/main Packages 

Ign http://ubuntu.beryl-project.org feisty/main Translation-it 

Hit http://security.ubuntu.com feisty-security/main Packages 

Hit http://it.archive.ubuntu.com feisty/universe Packages 

Hit http://it.archive.ubuntu.com feisty/restricted Packages 

Hit http://it.archive.ubuntu.com feisty/multiverse Packages 

Hit http://it.archive.ubuntu.com feisty/main Sources 

Hit http://it.archive.ubuntu.com feisty/universe Sources 

Hit http://it.archive.ubuntu.com feisty/restricted Sources 

Hit http://wine.budgetdedicated.com feisty/main Packages 

Hit http://ubuntu.beryl-project.org feisty Release 

Hit http://security.ubuntu.com feisty-security/universe Packages 

Hit http://security.ubuntu.com feisty-security/restricted Packages 

Hit http://security.ubuntu.com feisty-security/multiverse Packages 

Hit http://it.archive.ubuntu.com feisty/multiverse Sources 

Hit http://it.archive.ubuntu.com feisty-updates/main Packages 

Hit http://it.archive.ubuntu.com feisty-updates/universe Packages 

Hit http://it.archive.ubuntu.com feisty-updates/restricted Packages 

Hit http://security.ubuntu.com feisty-security/main Sources 

Hit http://security.ubuntu.com feisty-security/universe Sources 

Hit http://security.ubuntu.com feisty-security/restricted Sources 

Hit http://security.ubuntu.com feisty-security/multiverse Sources 

Hit http://it.archive.ubuntu.com feisty-updates/multiverse Packages 

Hit http://it.archive.ubuntu.com feisty-updates/main Sources 

Hit http://it.archive.ubuntu.com feisty-updates/universe Sources 

Hit http://it.archive.ubuntu.com feisty-updates/restricted Sources 

Hit http://it.archive.ubuntu.com feisty-updates/multiverse Sources 

Hit http://ubuntu.beryl-project.org feisty/main Packages 

Err http://www.beerorkid.com feisty Release.gpg
   Il server HTTP ha inviato un header di risposta non valido
Err http://www.beerorkid.com feisty/main-edgy Translation-it
   Linea nell'header non corretta
Ign http://www.beerorkid.com feisty Release
Ign http://www.beerorkid.com feisty/main-edgy Packages
Err http://www.beerorkid.com feisty/main-edgy Packages
   Linea nell'header non corretta
Scaricato 195B in 4s (40B/s)
Impossibile ottenere 
http://www.beerorkid.com/compiz/dists/feisty/Release.gpg  Il server HTTP 
ha inviato un header di risposta non valido
Impossibile ottenere 
http://www.beerorkid.com/compiz/dists/feisty/main-edgy/i18n/Translation-it.bz2 
  Linea nell'header non corretta
Impossibile ottenere 
http://www.beerorkid.com/compiz/dists/feisty/main-edgy/binary-i386/Packages.gz 
  Linea nell'header non corretta
Lettura della lista dei pacchetti in corso... Fatto
E: Impossibile scaricare alcune file di indice, essi verranno ignorati, 
oppure si useranno quelli precedenti.
peus a andrea:~$




la mia sources.list è la seguente:

#repo principali

deb http://it.archive.ubuntu.com/ubuntu/ feisty main universe restricted 
multiverse
deb-src http://it.archive.ubuntu.com/ubuntu/ feisty main universe 
restricted multiverse

#repo x le updates

deb http://it.archive.ubuntu.com/ubuntu/ feisty-updates main universe 
restricted multiverse
deb-src http://it.archive.ubuntu.com/ubuntu/ feisty-updates main 
universe restricted multiverse

#repo x la sicurezza

deb http://security.ubuntu.com/ubuntu feisty-security main universe 
restricted multiverse
deb-src http://security.ubuntu.com/ubuntu feisty-security main universe 
restricted multiverse

#repo aggiuntivi

#beryl

deb http://ubuntu.beryl-project.org/ feisty main
deb http://www.beerorkid.com/compiz feisty main-edgy

#wine

deb http://wine.budgetdedicated.com/apt feisty main

Non capisco dove possa essere il problema,

vi ringrazio

peus