Whatever the slowdown is, it is not revealed by YSlow. Can you please try the google tool next. I've also edited contents of the code field in my previous post.
For reference, my ping statistics are as follows.
pagead2.googlesyndication.com
Packets: Sent = 50, Received = 50, Lost = 0 (0% loss),
Minimum = 56ms, Maximum = 67ms, Average = 56ms
cdn.jquerytools.org
Packets: Sent = 50, Received = 50, Lost = 0 (0% loss),
Minimum = 44ms, Maximum = 45ms, Average = 44ms
ajax.cloudflare.com
Packets: Sent = 50, Received = 50, Lost = 0 (0% loss),
Minimum = 54ms, Maximum = 56ms, Average = 54ms
direct.hard-light.net
Packets: Sent = 50, Received = 50, Lost = 0 (0% loss),
Minimum = 144ms, Maximum = 151ms, Average = 145ms
There's also one more external domain being called, api.viglink.com. It cannot be pinged but it is also one of the CF features that were disabled earlier, so it is not the culprit anyway.