McAfee Security is one the best security programs available today which promises comprehensive protection against potential threat of virus and malware present in abundance on the internet. But, if you have facing degraded system performance after installing McAfee Security then it may not be entirely the fault of the antivirus program itself and just be a technical glitch which can be rectified instantly with the technical assistance of www.McAfee/Active team at 1877-956-4555. The support number is toll free.