Well, I rather meant what values do you refer to (in Task Manager), regarding the size.
As for the in/out of Standard Shield - it's caused by MS Jet drivers, doing some reading from avast! database, as you can see e.g. in File Monitor. I'm afraid we cannot do anything about it, except for switching to a completely different storage and getting rid of the Jet drivers (which is planned for the future, but will certainly take some time).