Ok, according to this thread PRSC and NAB are the same. Same engine,protection,etc. http://www.wilderssecurity.com/showthread.php?t=206970 both Configuration Version's are at 203. So far the same. Now for the Product Version......... In this thread post 22,23+24 http://www.wilderssecurity.com/showthread.php?t=183997 PRSC product version 188.8.131.523 is the same as NAB version 1.1.838. That was over six months ago. Now PRSC is at product version 184.108.40.2065 and NAB is still at 1.1.838. Does anyone know what the differance between PRSC 220.127.116.113 and 18.104.22.1685 is? And why NAB has not updated their version like PRSC? Is norton draging their feet or is there really still no differance?