Hi Pieter,
I haven't had any luck in fixing my problem since my last post, and with a number of other things competing for my time I haven't had a chance to do any more in trying to resolve it since last I posted.
I did receive a message from anoher member who had been having similar sorts of problems, and had been using stardock products (as I am).
The only changes to my system that I know of that might have prompted my problems are either; a) Windows Updates, b) Stardock updates, and c) effects of system crashes due to power blackouts.
So what can I try next?
Cheers,
Brian