AVG Anti-Virus Free Edition 2012
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Full user review
"AVG will try to take over your browser. Beware!"
It's free. That's about the best you can say for it. I suppose it also detects viruses, but read below for the cons. You don't want this software on your computer!
AVG Anti-Virus Free Edition 2012 will attempt to install a toolbar that changes your homepage and your default search engine in Internet Explorer, Firefox and other browsers. It is very difficult to remedy these changes once they have been made. I recommend that users look elsewhere for a free anti-virus solution. AVG has gone to the dark side and in my opinion can no longer be trusted as a reputable corporate citizen.
AVG Anti-Virus Free Edition used to be a great program. But lately they have begun installing very malicious software that attempts to modify your browser's behavior, and it is very difficult to get rid of. Look elsewhere for a free anti-virus software. You might try ClamWin which is a free open source anti-virus program that works well.