This is reported from an upgrade of RH7.0+patches --> beta2
This defect is considered MUST-FIX for Florence Beta-3
If the system has been down for awhile, and sadc (which runs from the cron script) tries to process an empty file, this is reported. It is harmless.
Except the machines that are reporting this are up 24x7 unless I install/upgrade beta software. So far as near as I can tell the files do not exist at all.