With a hang like that, seems like a DNS resolution problem somewhere... but not due to the site transfer. It seems like a DNS lookup of some sort failing internally (i.e., the first nameserver the machine's using to resolve names is failing)... however I checked and that doesn't seem to be the problem here.
The interesting thing is that the hang is fairly consistent, but static pages / images load instantly.
I wish I could give you a better answer here... I'll try to look into it some more this week.