Hi Thawipong, this relates to the notification we provided to all SEs in the email titled "Heads Up! ESXi 6.0 lockups on G4 hardware".
This issue is still under investigation, engineering are actively trying to reproduce the issue. VMware has posted a KB article #2124669
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2124669 that describes similar symptoms that are reported from the field with all versions of ESXi 6.0.
Unfortunately I cannot give you anymore information, this is being treated with the highest urgency.