Hey Erin,
Being on the west coast, you're right, the MTU LUG mirror probably isn't the fastest. There are larger mirrors like
mirror.anl.gov that we simply can't compete with off-campus with our 100Mbit connection (they have a 10Gigabit network connection for IPv4 traffic!.) Even if/when we upgrade our network connection, we'll only have a few hundred Megabits to the Internet.
If you're looking to speed things up, there are packages that will help you find the fastest debian mirror. Take a look at these links
Basically the program will download the list of mirrors from
http://www.debian.org/mirror/list and find the most available mirror, and build a sources.list file for you to use. I haven't used them personally but I'd say give them a shot.
General note: I know Ubuntu has a feature that will find the fastest mirror, can't say if it's in Debian or not, it probably is. Also Fedora and CentOS by default use fastestmirror plugin to find the most available mirror.
Hope this helps