Unable to fetch some archieves

[André Vieira <debian-newbie@terra.com.br>]

Good Mornig

I was trying to install Debian Woody in a Desktop in a office.

My connection is for a firewall, is required my username/password for 
connection.

does anyone of you have an idea why durant the Debian Woody installation 
the installator show this (after selection of tasksel):

Err http://ftp.br.debian.org  Error reading from server - read (104 - 
connection reset by peer)

this is show in _some packages_ only

I am download +- 200 Mb, but some packages don´t donwload

at finish, this message is displayed


"E: Unable to fetch some archieves, maybe run apt-get update or try 
--fix-missing?
Some errors occurred while unpacking. I'm going to configure the 
packages that were instaled. This may result in duplicate errors or 
error caused by missing dependencies. This is ok, only the errors abose 
this message are important. Please fix them and run [i]nstall again.
Press enter to continue"

Thanks in advanced

PS.: sorry for my poor English :-)
I speak portuguese, but in debian-user-portuguese@lists.debian.org I not 
receive any replies