I just recently built a new PC and installed my Norton Internet Security 2009 program. Tonight I discovered when the system sits idle, I get a message indicating there is no disk in my CDROM drive. I canceled the message and the system left idle mode. After idle long enough, the message reappeared. I assume I need to exclude my removable media drives from being scanned. Is this correct? I don't remember needing to do this with my previous install.