I'm not sure if it's just me but my ssh sessions started blocking out on a couple of my EC2 instances running Ubuntu 12.04LTS. I tried restarting the instances but it won't just ssh. Then I tried firing up another instance and the AMIs list does not show Ubuntu 12.04LTS or Ubuntu 13.10 anymore. Instead it's now showing Ubuntu 14.04LTS. Not sure why this would effect me ssh'ing into already running instances.<p>Is it just me?