apt-get error

[Pollywog <pollywog@shadypond.com>]

I am getting the following error when I do 'apt-get upgrade':

Err
http://http.us.debian.org potato/main makedev 2.3.1-27
  404 Not Found
Failed to fetch
http://http.us.debian.org/debian/dists/unstable/main/binary-i386/base/makede
v_2.3.1-27.deb
  404 Not Found
E: Unable to fetch some archives, maybe try with --fix-missing?

I cannot install any packages because of this one missing package on the
Debian archives.  Any way around installing each package I downloaded
manually?

thanks

--
Andrew