Hi Basj,
Thanks for your reply and for the troubleshooting tips. Here's what I did:
Set the screen off timeout to one minute to speed up the testing process.
Rebooted my PC.
One minute later, the screen went off as expected but came right back on again.
Uninstalled Start11.
Rebooted my PC.
One minute later, the screen went off as expected but came right back on again.
Start11 was out of the picture at this point, so it's not the cause of my problem.
Installed Start11 and upgraded to the latest version.
Rebooted my PC.
One minute later, the screen went off as expected but came right back on again.
Thanks again for your assistance.
Bill...