Avast is one of the most popular free Anti-Virus software available to download.
The free anti-virus comes complete with an anti-spyware protection too and is classed as the minimum protection that every PC should have installed.
The Avast Free anti-virus software is only available free for personal use and non-commercial use.
In February 2011 Avast free anti-virus was rated the fastest out of 20 anti-virus programs.
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