PC Goes to Sleep while Norton is running

This morning I knew I was going to be out for awhile. I set Norton to run the comprehensive scan which as you may know includes scan, disc optimization, backup, the whole works. How disappointed was I when I came home hours later and found only the live update had run and the scan was in progress. I have my PC set to sleep after 10 minutes idle time. Is this what is pausing the scan in progress?

Also, in startup manager I have set 4 programs for delay start. After every start, when I recheck that they are still selected, only 2 are selected. It keeps clearing the selected box for 2 of the programs. What's up with this?

 

Any and all help appreciated.

 

Jerry