43b7af74_vices_List___Overclockers_Club__Notes
[Service Name] Remote Procedure Call (RPC) Locator [Recommended Setting] Disable [Notes] 
Microsoft Locator is the default name service that ships with Microsoft® Windows NT®/Windows 2000. The RPC run-time library uses it to find server programs on server host systems. Prior to Windows 2000, Microsoft Locator did not provide persistent name service entries. All entries in the name service were stored in a memory cache on the server program's host computer. The locator used a broadcast mechanism to discover the location of servers as requested by clients. Whenever the host system shut down, all name service entries were lost.
Windows XP Services Removal Guide » Page 2 - Windows Services List - Overclockers Club
Notes