[FAI] Install error

[fcm2 at alu.um.es]

Hi!

In the installation of the client, if fails with errors of this kind:

Could't stat source package list http://amd64.debian.net sarge/main 
Packages 
(/var/lib/apt/lists/amd64.debian.net_debian-amd64_dists_sarge_main_binary-amd64_Packages) - stat (2 No such file or 
directory)

I get several errors like this, but in my nfsroot, those files allready 
exists. And if I do "ls -l /var/lib/apt/lists/" in the client, I found 
the files!! And they are not empty!!

Any idea? What can be the problem?
Thank you very much.
Fernando