Thanks for your response.
Actually, the solution was not as complicated as I thought.
I trashed the INFO plist
and the VERSION plist from the
folder contents of DASHBOARD in
Applications.
Re-started the MBP and all is as it should be . . . as far as I can tell (i.e. when the monitor dims, no DASHBOARD shows up). Also, DASHBOARD appears to be functioning as expected when F4 is pressed.
Thanks, again, for your input.
***********************************
Ooops. Problem had returned. So I went into TIME CAPSULE to retrieve/restore the previous version of DASHBOARD (BOTH plists returned, as expected from the back-up).
So . . . back to your questions:
1. Yes . . . DASHBOARD appears
brighter than other windows behind it;
2. I do not know what "haxies" or "GUI" are;
3.
Nothing in either /Library/Input Methods folders;
4. An APPLE "Arabesque" Screensaver is set to come on at 10 mins.; Energy Saver is set at 15 minutes for battery/25 minutes for power cord usage.
Thanks, again. Hope this helps to find the (right!) solution.
One more thing: Problem does NOT occur when logged in to the GUEST account.