Originally Posted by PC eye

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McAfee is already on the lower end of the food chain for system protection. But one reason for a sudden drag on startup could be from something in the software not being installed fully or some crosslink to system files. Apparently you haven't seen too many new programs added in a year's time. Slowdowns on system are usually caused by clutter from leftover or orphanned registry values when uninstallers leave stuff behind.

The msconfig utility is one way to disable anything actively running from starting up along with Windows. To open the selective startup options you start the system utility by typing msconfig at the Run prompt and press enter or click the ok button to see the new screen appear. The startup and services tabs on the right side are the items of interest since you will find entries for any antivirus or other security program in both. Just remember to select the "hide all microsoft services" option with a check mark.