Dear HenryL,

Dear God, did you really install MacAffee?

Mmmm. Here is a tip or two for uninstalling that vile piece of crap from the founder of the company, yes it really is him. Be forewarned there is a little bit of swearing involved.

http://www.youtube.com/watch?v=bKgf5PaBzyg

I personally have run with Defender for many years primarily because it is designed for Windows and has far less call on computer resources than the others. The small hit on security levels is more than made up for in computer speed.