#2 - April 14, 2011, 6:37 a.m.
First - love the new app - I'm with Straton - very excited to see early adoption of the new API :)
It doesn't sound like you should be hitting any sort of throttling on our side - there may be a couple of other reasons for this - if this happens again, please record the IP - we have some other mechanisms that may have blacklisted the IP range your app has spun up from (Generally if its our application-level throttling in action, you'll get a 503 error code as opposed to a Connection Refused).
I'll consult with Straton and our Network folks tomorrow, but feel free to follow up with any other issues.
Thanks again!