Can't find setting for a background scan I need to change

Hello all

There seems to be a background scan scheduled for Wednesdays on my PC, and I NEED to either stop or reschedule it, as the timing tends to only create stress… the whole PC slows WAY down and I feel like throwing the thing out the window!

BUT no matter where I look, I can NOT find the place to change this setting! 

I have attached screen shots showing certain settings screens.

Can anyone point me in the direction of other areas to look?

(I am running Windows 7 Pro, Norton Security, and Norton Utilities 16)

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