I have an EC2 "micro instance" running Canonical's Ubuntu 10.04 LTS. Has been running for 6-9 months now, infrequently rebooted (once every few weeks at the most).
I just did what I thought was a routine aptitude update, aptitude full-upgrade. On noticing there seemed to have been some new -ec2 linux images installed, I rebooted the system. While it seemed to reboot and go back to "running" status on the console, it didn't come back with its usual ssh and http services. I've tried stopping and starting it, re-associating it's elastic IP... no joy.
The strange thing is, "Get System Log" (AWS console) returns a completely blank log. Empty. Nothing. Not one character. (At least it's empty after the first start-stop; before the stop it just contained a final line about restarting).
I've tried a few stop-start cycles but no improvement.
Any advice what to try next to get my instance back to life ?