Occassional "Waiting for response from" lag

[raymond]

Hey Rob,

I ran 9 tests from Los Angeles location (where my dedicated server resides) and only 1 has a pretty long DNS lookup time on my CDN.
http://www.webpagetest.org/result/131127...2/details/

You may be right that the problem experienced by my assistant may not be DNS related because they are in milliseconds while he had to wait a few seconds to continue loading.

To confirm again, the "Waiting for response from" is actually waiting for the first byte, which means that the problem is probably from my dedicated server?