Comment 4 for bug 1078926

saw this on t1.micro on
   us-east-1 ami-3f70f756 canonical ebs/ubuntu-raring-daily-amd64-server-20121119
same symptoms
  * no console output after initramfs
  * could not ssh in as None datasource is selected

Here, a reboot fixed the issue.

I'll attach /var/log/boot.log which had some interesting information. Notably, it seems to show that networking did not come up.
The stuff here generally *should* have gone to /dev/console.

Also, interesting was that networking after the reboot was not very reliable.
'apt-get install pastebinit' would work, but 'pastebinit /var/log/boot.log' did not work.
Also did not work:
  ssh $hostname cat /var/log/boot.log > /tmp/boot.log
  scp user@$hostname:/var/log/boot.log /tmp/boot.log

the ssh and scp connections would basically block.