I have a brand new computer. Today I decided to uninstall the trial version of Norton and go with Avast Pro. I had successfully done the download and run the setup. There was a message about a license key and I wasn't sure that I was supposed to get this before doing the setup so I called Avast support contractor, Iyogi. What a mistake! They took over my machine, installed some software to show I had 'Errors' (one of the programs on the list was Google Update), did a REGEDIT to change the registry, Why? They were trying to use the 'Error' log to sell their services and became very perturbed that I would not sign up. After I got off the phone, my computer was frozen and showing 100% CPU usage. I used system restore to in effect uninstall Avast and hopefully remove the damage Iyogi did. My computer seems to be ok now. Do a Google search on iYogi and you will see just what kind of company they are.