Connection timed out & Incorrect MD5Sum

[Lyno Sullivan <lls@freedomain.org>]

When using apt-get at:

http://http.us.debian.org/debian/

why do I get the following errors repeatedly on the same packages?

1) Connection timed out
2) Incorrect MD5Sum

What is the proper thing to do about a situation like this?  Should I
report it and if so, where?  Should I use an alternate http site.  The list
of mirror sites does not list any alternate http sites.  I tried a couple
ftp sites and kept getting "Couldn't locate an archive source for package
...". 

Thanks for the help.