"We have our network administrator heading to the data center now and should be there in 20 minutes or so. More updates to come."
If they host a million domains, why isn't someone on site 24x7?
Anyone with serious uptime requirements avoids DreamHost. It sounds strange considering their size but it probably just isn't really in their budget. I used to have a DH account and it's pretty good for what it is. Now I have a VPS though.
My guess is they only have low to mid level support 24/7.
My site was slow and support told me that this was due to the long travel the packets have to go cross-atlantic. Yeah.