If any of you have the subscription to the Groove3 web site and are using Internet Explorer to view the videos, you might want to steer clear of the version 10 update for Internet Explorer, at least for now.
I updated to IE 10 and everything seemed to be fine, until I went to the Groove3 web site. When I opened a video, only about the top 25% of the video and the menu on the right would display in the popup player window. The lower 75% of the window was an empty black background!
I tried a number of things, including installing the latest Flash version, but to no avail. I finally gave up and rolled back to IE 9 and everything is back to normal now.
JTW