apt update

[Mark Panen]

Hi

When i run apt-get update i get an error:

"Failed to fetch
http://fedora.mirror.sdv.fr/fedora/fedora/3/i386/base/pkglist.updates 
Size mismatch
Failed to fetch
http://fedora.mirror.sdv.fr/fedora/fedora/3/i386/base/pkglist.extras 
Size mismatch"

apt-get upgrade then gives me "

Err http://ayo.freshrpms.net fedora/linux/3/i386/updates perl 3:5.8.5-11.FC3
  504 Gateway Timeout [IP: 212.219.56.138 80]
Failed to fetch
http://ayo.freshrpms.net/fedora/linux/3/i386/RPMS.updates/perl-5.8.5-11.FC3.i386.rpm
 504 Gateway Timeout [IP: 212.219.56.138 80]
E: Unable to fetch some archives, maybe run apt-get update or try with
--fix-missing?

How can i fix the apt database ?