Thanks for all your replies!
To respond to a few of them...

The first is that Heritage is on hubs.  10Mbit hubs to be exact
Ewww... that could explain a bit. My ping isn't too spiky, but that's just... icky.

Hey, my first install of Gentoo was with the 1.4 liveCD as well.  You
_have_ updated since then...haven't you?
Yes, I built from source actually, but I'm not quite sure how to say what version of Gentoo I'm using because it's always being updated. I guess the closest would be something like:

$ stat /var/lib/portage/world | awk '/Modify/{ print "1.4",$2,$3 }' | sed -e 's/[:- ]/./g'
which gives: 1.4.2006.02.26.17.32.23.000000000 :)
mmm... CLI... I love linux :)

I'm pretty sure that it's the mystery proxy dns-caching thing like a few of you said. That makes sense. It's only on the first connection to the server that I seem to have problems and all connections to that server hang until one gets through, then they're all fine. I rigged up a ghetto webconnection timer and used it to test some things:
$ time nc -z -w 10 hostname 80

90% of the time it connects in < .1s, but the other times it hangs till it times out at 10 seconds. You can use that to reproduce it if you have some patience :P. Make sure to pick a site that's not very commonly visited so that it won't be in cache. I'll try to get some tcpdump logs etc and send them along to IT. Hopefully they can get it taken care of sometime soon. I'll also have to try using a proxy server instead. And now that I think about it, I think that it's happened a few times with SSH too when I log into the CAEDM lab. I just thought the hosts were down, but it could be a dns thing too. The joys of a massive campus network :P.

Anyway, while we're on the subject of campus networks. I'm a little curious about the worm/virus population on the networks here (it is a college network after all). Anyone done any checking into that? I think I may have to get snort up and check it out a bit.

-Brian

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