It seems someone else got the problem on this forum recently. This is not normal. Make sure you report this issue to VMware GSS with reporting the version of the vCenter plug-in and the vCenter build you are using.
Christophe.
If my answer resolved or helped you, please mark it as Correct or Helpful to award points. Thank you! Visit http://www.vcoteam.info & http://blogs.vmware.com/orchestrator for vCenter Orchestrator tips and tutorials - @vCOTeam on Twitter