I can replicate this, which is why I'm here looking to see if anyone else has the problem. I'm glad his setup is simple, because I do have addons and I'm using PopFile to filter out junk mail. Everything works fine with Blink disabled, but if it's running, thunderbird indicates it's connected to the host, downloading a message, and then it eventually tells me it timed out. PopFile is then unresponsive, but I can terminate it.
PopFile version 0.22.5
Thunderbird version 2.0.0.6
Blink personal 3.2.2 rule version 1419.
I have application rules for both PopFile and Thunderbird to allow them to run.
Charles