昨晩のつながりにくさは外部からの攻撃が原因だった様子。
DreamHostの状態は http://www.dreamhoststatus.com/ で逐次報告されている事に今朝気付く・・・

以下、抜粋
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Connections Problems to the LAX Datacenter

We are currently experiencing severe packet loss between the Garland building and our LAX datacenter. This is affecting most dedicated server customers as well as all customers in the “frisky” cluster. This includes the following web servers:

belair, boxster, bugatti, cadillac, camaro, carrera, cayman, chevelle, corvette, edsel, ferrari, gremlin, hornet, hudson, impala, manmeat, pacer, pinto, skoda, stingray, studebaker, touareg

We are investigating the cause now and will update you with more information as soon as it’s available.

-UPDATE 7:28 AM-

It appears this was the result of a massive Denial of Service attack on a customer in the LAX datacenter. The attack has been thwarted and everything is running normally again.