What was the contents on your 6.0U3 eam.properties file you pasted in?

Having same issue with EAM service not starting, Invalid bean definition with name 'esxAgentMgr' defined

vcenter:~ # cat /etc/vmware-eam/eam.properties

eam.web.root=/usr/lib/vmware-eam/web

eam.web.root=/usr/lib/vmware-eam/web

the files eam.properties just has one line dupped twice in it and we have no other vcenter server to crib from.