Does the PNA have any virus protection?
No! During manufacturing, Norton (Symantec) AntiVirus is installed on each unit but this is removed before shipment due to licensing issues. Use of an antivirus program is very strongly recommended. Obviously, Norton AntiVirus will function, but other antivirus programs should also work well. The PNA is always shipped with the latest service packs and critical updates that were available at the time that the master disk is produced. See previous Service Pack question.