http://www.dnsbl.com/2007/08/apews-news-and-commentary-round...
I had one hardware issue during that time -- bad memory. They responded quickly.
EDIT: Here's the code in case anyone's curious -- note that most of it is just a list of domain names:
echo anywhere.fm adpinion.com fuzzwich.com slapvid.com versionate.com auctomatic.com buxfer.com heysan.com octopart.com socialmoth.com virtualmin.com weebly.com whitenoisenetworks.com writewith.com xobni.com iilwy.com jamglue.com scribd.com thinkature.com justin.tv audiobeta.com flagr.com inklingmarkets.com snipshot.com sproutsys.com wufoo.com clickfacts.com loopt.com | xargs -n 1 | lam -s 'www.' - | xargs -n 1 host -t a | grep 'has address' | cut -f 4 -d ' ' | xargs -n 1 whois | grep OrgName | sort | uniq -c | sort -srn
Amazon.com (presumably EC2?) -- 2
Layered Technologies, Inc. -- 2
NoZone, Inc. -- 2
Rackspace.com, Ltd. -- 2
Software Technologies Inc. -- 2
BitPusher, LLC -- 1
Carnegie Mellon University -- 1
Columbus Network Access Point, Inc. -- 1
Global Netoptex, Inc -- 1
ThePlanet.com Internet Services, Inc. -- 1
So it looks like YC-funded companies usually have dedicated servers, but there's no single place where they tend to congregate.