Okay, as I'm going to have to wait until Intel (and the devs ? ) get the Intel GPU issue resolved, I've re-installed Jaunty Jackalope. Everything works as it's supposed to. Have my desktop configured the way I had it before. Made a minor modification to my xorg.conf file to improve performance, and all is well. The mod to xorg.conf consisted of adding:
Option "AccelMethod" "UXA"
Option "MigrationHeuristic" "greedy"
to Section "Device"
Life is good again.
Option "AccelMethod" "UXA"
Option "MigrationHeuristic" "greedy"
to Section "Device"
Life is good again.