Yeah that is a whole lot of usage. Do you leave your computer on all the time? If so, don’t, put it in sleep mode when you’re not using it. What version of Windows are you running? Also, what other devices have access to your Comcast internet?
My computer normally goes into sleep mode. I did notice a few times when it had gone into sleep mode, monitor powers off, and then it comes back up. It made me suspect the hard drive was being accessed.
I have windows 7. No other devices.