Hi,
After updating to 5160, Essential Data Gathering fails every time.
I uninstalled and reinstalled 5160 and the problem was still there.
If I run separate tasks of Traffic Logs, OWA Logs , Distribution List Membership and Mailbox Account Properties, all of them are Successful.
Even after that, Essential Data Gathering fails to complete.
I installed again 5151 and everything is back to normal again.
Exchange 2010 SP3 UR14 14.03.0301.000
BR,
Kostas