this is looks like a Norton AntiVirus but double check what AV you have running on your CCM server(s).
as for your delay symptom with retrieving messages, check your MessageStoreManager service within UnityToolsDepot. i've seen when this is running and hung up for some reason, that it induces a delay when unity attempts to authenticate users to or retrieve messages from Exchange.
The scavenger process goes through the log output in Unity and constructs information for the ReportDB tables that the various reports run against. It should run every 30 minutes or so and should never just keep going - if it's having a problem you can certainly kill it - it's not going to hurt anything in Unity itself other than the fact that your report tables will not be updating.
And yes, virus scanning apps can make this run slow or trip it up entirely if the scannign service decides this process shouldn't be updating the DB or running through the diag files...
Just to follow up - the scavenger process is set to run regardless of if you run reports or not. In other words you did not have to explicitly ask for a report to be run for it to rummage the log files and update the ReportDB tables.
By disabling the service you will never get any reports of any kind out of the system. If that's not a problem then this shouldn't cause a problem.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...