Norton 360 full scan doesn't run when computer goes to sleep

I just upgraded to Windows 7 and when I run a Norton 360 full scan, the scan seems to pause once the computer goes to sleep/hibernation (whatever you call it).  When running in XP, the full scan would complete in an hour or less.  Now in Windows 7 it ran all night and wasn't anywhere near completion.  Once the computer came out of sleep/hibernation the scan finished up fairly quickly.  Any way to make Norton continue running?