When you start a remote AS7/EAP6 with the management port exposed and enter the user&passwd incorrectly, the server will keep starting until the timeout is reached. It would be nice if we could show an error right away.
Also when the management port is exposed, but startup poller is set to Web Port, it is even worse - server will start and will be shown as started. But when you try to access the server in MBean Explorer, it will use 100 % of CPU and eventually eclipse will crash.