us.archive.ubuntu.com down

[Jeffrey Barish]

Liz Young wrote:

> I noticed that the us.archive was really unreliable for some time, so I
> switched to the main archive until I found another mirror.
> 
> I now use http://mirrors.cat.pdx.edu (Portland State Uni, west coast
> USA) for Dapper and Edgy.  It's stable, up to date, and really fast.
> 
> HTH,
> -Liz

The mirrors at pdx worked great for me the first time I tried them (on
Thursday) and never again.  Here's a small sample of the output from
apt-get update:

Failed to fetch
http://mirrors.cat.pdx.edu/ubuntu/dists/edgy-updates/restricted/source/Sources.gz 
Cannot initiate the connection to mirrors.cat.pdx.edu:80
(2001:468:1f04:200:2e0:81ff:fe2b:f564). - connect (101 Network is
unreachable) [IP: 2001:468:1f04:200:2e0:81ff:fe2b:f564 80]

I also still cannot connect to us.archive.ubuntu.com after a week of trying:

Errhttp://us.archive.ubuntu.com dapper-updates Release.gpg
  Could not connect to us.archive.ubuntu.com:80 (1.0.0.0), connection timed
out
Fetched 137kB in 4m0s (570B/s)
Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/dapper/Release.gpg 
Could not connect to us.archive.ubuntu.com:80 (1.0.0.0), connection timed
out

Is there any chance that there is something in my system that is preventing
the connection to either repository?  I have no problem pinging either one.
-- 
Jeffrey Barish