In many environments, securing logon sessions is very important… especially if you have to deal with HIPAA, FERPA, or any of the other myriad of government regulations (or jumpy Information Security departments) that are out there. If a user logs into Windows 7 and has logon.scr set as a forced screen saver in Group Policy, his default screen saver will be set to (None) and, because it is a Group Policy, the user will be unable to change this setting.
