This is the Internet Security (not just the AV)
Buy the 2009 version from scan, download the 2010 version direct from the Kaspersky website, and use 2010 version on 3 pcs! Kaspersky do not mind you using the 2010 version instead of 2009 one!
Deal is on today only section, so it will expire around midday on the 15th of September! After that it will go up to 13.21 +3.99 P&P.
Or get it FREE by signing up to Barclay's On-line Banking.