Looks like Dreamhost is back online after their network outage today.
Here is an excerp from their status blog explaining the issue:
Update on October 21, 2010 @ 10:34 PM, PST: Word back from our admins is that the issue is routing based. Amongst the assorted problems springing from this is a significant amount of packet loss. That’s why some folks can see things just fine while others are having really bad problems. We’re getting really close to cracking this nut — although we still don’t have an ETA — but we thought you’d still like to know what’s going on.Update on October 21, 2010 @ 10:52 PM, PST: A side effect of the outage has been the violent thrashing of our internal load balancers. Naturally, this made our problems even worse. We’ve leveled those out now and continue to push forward until our networking is back to normal. More updates coming soon!Update on October 21, 2010 @ 10:59 PM, PST: And we’re back! Apparently, this whole fiasco was caused by a bug in Cisco’s VSS operating system. Sorry that it was so hard for our team to pin down! They’re on standby now tho and will continue to watch the network to make sure nothing goes pear shaped again. If you are still seeing issues, please contact our support team as soon as possible!