We have upgraded Zimbra from 5.x to 6.0.4 and now the server status page shows X's for all services even though they are functioning without issue. I have tried restarting the services to no avail. Here is the server info:

RHEL 5.4 Virtual machine on a RHEL 5.4 VMware Server Virtual Host.
4GB of RAM allotted to VM
2 vCPU's alloted to VM