Thanks for that guys.
As I said, it's not such a big deal. If the spinning can't be disabled, I'd rather 'put up, and shut up' than risk auto-infection.
Great product folks
It isn't that the spinning can't be disabled, it depends on your choice, it can be completely disabled, not advised. It only rotates when it is building its database of information on certain files in your system. Once this is complete it won't trouble you until its next cycle in 21 days time (which can be customised).
If the VRDB is set to generate when Idle or when the screen-saver is running there are more likely to be many interruptions, which would take longer to complete.
I have mine set to run when the screen-saver is running, since I don't use a screen-saver it would never run. I do a manual VRDB, Generate Now every three weeks as a part of my regular system maintenance, it takes about 9 minutes on my system and that is it done.
So there are ways round this, it just needs some lateral thinking