My customer uses "F-secure" antivirus software. There are several pages that indicate F-secure causes this message such as [1]. I told my customer to stop F-secure and report to the vendor.
Anyway, I think this message is not helpful to administrators and should be lower level such as "DEBUG1".
In this particular case, it seems it *was* helpful, no? That's how you found out the customer used a broken antivirus product, which may certainly also cause *other* issues.
Some sort of rate limiting to reduce the volume might help, but the message itself seems to have clearly been useful.
