I was doing a search for a good resident-shield antispyware software and the AVG anti-spyware was coming on top of many things so i downloaded and install it to give it a try. I also use the windows defender and here comes my question/query I checked the compatibility list and windows defender is on it so i assume that both are working on different layers of scan or something like that. How can i test the AVG resident shield if its actually working ?? i just installed the new version of nero and windows defender detected several changes (new start-up, new services, new shells) and i click on permit. Wasn't AVG suppose also to notify me on those changes is windows defender before avg scans ? when i clicked on permit and the changes committed wasn't AVG suppose to be triggered that changes are made on my system and notify me as well in a form of a second security layer Same things applied with different other tests such as change the windows firewall settings, install new programs on the start-up of windows, change of the host file etc. I would really appreciate some feedback here cause i think is a great application and I'm in the process of evaluation and finally buy it (for real) Thank you.