If a virtual machine on your Host doesnt respond and you cannot kill/power it off, KILL it:
- enable SSH on the ESX-Host
- Connect via SSH to the ESX-Host
- Enter the command „esxcli vm process list“ and note the World-ID of the unsresponsive VM
- With this World-ID you can kill the process of the Virtual machine: esxcli vm process kill –type=soft –world-id 1077499
- If it doesnt get killed soft, try it with hard or force
also mentioned here: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1014165
3+