Avast Free Antivirus
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Full user review
"Best free antivirus available"
Good detection rate, provides maximum protection. Good forum support. Doesn't bundle in adware toolbars.
Sandbox takes some tweaking.
WebRep slowed down my browser but easy to remove.
Great program. No complaints from me!You do have to register the product within 30 days to continue getting updates. This is explained fully on Avast's website.
Updated on Aug 3, 2012