this is a copy/paste taken from http://www.symantec.com/business/support/index?page=landing&key=55274.
so you know (for those not aware of this):
Notification Server (NS) will be renamed to Symantec Management Platform (SMP) on December 03, 2010. Once the change is completed, all items previously categorized as Notification Server (NS) will be found under Symantec Management Platform (SMP).
If I understand this correctly, searching for NS will give you no results after Dec 3rd 2010...
I've become used to the 'new' way of searching, although it took me awhile.