AVG Online Shield Svc. / High CPU Usage

Hello Kevin,
Thank you for contacting us. We would like to inform you that AVG Online shield scans downloaded files before they reach your computer to better protect you against hidden malware and it should be active always. Do you experience the high CPU usage when you are connected to internet or upon normal usage too? If it happens even when PC is offline, please try to repair your AVG once.
To repair your AVG please follow these instructions:

Go to Start -> Control Panel.
Note: Click Settings first if Control Panel is not available in the Start menu.
Open (Programs) -> Programs and Features, or Add or Remove Programs.
Select AVG Protection in the list of programs.
Click the Change or Change/Remove button.
Select Repair.
Follow the instructions on your screen to complete the installation.
Restart your computer.

Acer Aspire 7720-6155 Laptop / Core2Duo CPU
Win Vista Home Prem. / Chrome Browser

With Google Chrome and Adobe Flash having their issues, I've been paying attention to my CPU usage. Both have been the cause of high CPU usage lately, and running both CPU's at 90% to 100% for awhile causes this thing to get pretty toasty. with the lags/hangs/stutters etc… that come with it. Now recently when it happens, I noticed in task mgr.a few times that the only thing running at high usage was AVG Online Shield Service. It runs up & down between 45% and 89%. It won't let me end the task, and I can't find the file location. Has anyone else noticed this? Or know how to close it up? Thx.

Hello Kevin,
Thank you for contacting us. We would like to inform you that AVG Online shield scans downloaded files before they reach your computer to better protect you against hidden malware and it should be active always. Do you experience the high CPU usage when you are connected to internet or upon normal usage too? If it happens even when PC is offline, please try to repair your AVG once.
To repair your AVG please follow these instructions:

Go to Start -> Control Panel.
Note: Click Settings first if Control Panel is not available in the Start menu.
Open (Programs) -> Programs and Features, or Add or Remove Programs.
Select AVG Protection in the list of programs.
Click the Change or Change/Remove button.
Select Repair.
Follow the instructions on your screen to complete the installation.
Restart your computer.