From time to time the ucs-ec2-create tool fails with "paramiko.transport:Socket exception: Connection reset by peer (104)" while running the initial setup-join. Especially in the large UCS@school performance tests. http://www.itmaybeahack.com/homepage/iblog/C551260341/E20081031204203.html
I didn't see it again.
For this bug is no separate QA needed.