To Ex_Brit & Vinod_r2 -
After all the assistance you gave me, I wanted to let you know what I heard from PopCap Games today:
"Thank you for contacting PopCap Games Customer Support. We hope the following information will be of help to you.
It's appear that McAfee Anti-virus program have some issues with all the Popcap games, we are contacting McAffe to try to resolve all the problems. Please accept our apologize and we hope to be able to contact you back again when the issues with the McAffe are solved."
... so, it appears they have realized that ther eis a problem..
Thanks for all your patient help!