Yes, as you said:
"Right clicking on a file or folder would produce an memory expection in explorer. (however it worked fine, clicking in a blank area, plus using the WINDOWS context menu button)."
Oddly enough after living with my problem and occasionally checking back to this bookmarked webpage I got a little used to the problem. A week or two ago and after some reboots the problem has since resolved itself. Go figure.
So now I'm clearing out some old bookmarks and discover all of your remarks. Good to know for future reference. I'm keeping this bookmark and will certainly keep this site handy.
Thank you all, regardless.
Groove on,
~ Sunshine *