I'm back begging for help. Can't get through to CA Security Software.
As noted above, the problem of the super-slow PC seems to be related to a Virus definition update in the past 2 weeks.
Does anyone know where these updates might be stored or how to find them?
The only way I can use my PC is to disable virus scanning for now. A risky thing to do.
If I could find the updates from the past 2 weeks, and delete them, I would at least have some protection until I hopefully get through to C.A.
Thanks everyone for hanging in with me here...