On corporate PCs you may often find components for the corporate virus protection. One very popular product range is the Symantec Endpoint Security Suite.It offers protection against viruses, malware and spyware. It also provides machines with a desktop firewall and network policies.On the flip-side these comprehensive security suites take up lots of system resources. I would even go that far to say that these products may get into the way of completing business critical tasks. While I would not suggest to compromise companies' security I do encourage everyone to explore ways to temporarily free up more system resources.For the specific case of disabling Symantecs Endpoint Security Suite's  Services completely (including the sticky Symantec Client Management Service) I would suggest downloading the Sysinternals Process tools for current Windows platforms or for Windows XP and to follow the instructions embedded in the screenshot above.For Symantec SMC specifically the command:

Run:  smc -stop

seems very useful when you are trying to get rid of it.