In Norton Security Suite v5.1.0.29, the list of programs in the Startup Manager does not match the list of programs reported by Microsoft Windows 7 Professional x64's msconfig program. In my test case Norton lists 11 programs in Startup Manager, while the Startup tab in msconfig lists 12. Further, one of the programs which is listed in both is listed correctly as disabled by msconfig and incorrectly listed as enabled in Norton.
A related post from Norton Security Suite v4 is available at: