keypair.pem saved in ~/.sumo not ~/.ssh

[hedgehog]

I found keypair.pem saved in ~/.sumo not ~/.ssh. This meant the sumo script hung at:

---> Acquire hostname...      ec*.compute-1.amazonaws.com (28.8s)

In a separate shell I had to copy the kepair across to ~/.ssh then ran
sumo ssh
This login succeeded, however the sumo launch script was still hung at point above.
Not sure if one should wait for a timeout, but it has been nearly 5 minutes.

[hedgehog]

OK so I'm not sure what is happening, but eventually I did get the ssh shell prompt. The wait time was quite large:
---> Wait for ssh... done (968.2s)