When I perform the "control-alt-delete" function on my laptop, the only option that comes up is the CPU Usage/CPU History table. This is a new problem - the laptop is about 3 years old. I did not install new software. I have the Norton security & SPAM suite. The only way to get rid of this screen is to repeat the control-alt-delete function until there's a group of them and then close the group.
Thank you again.