Kaspersky UK currently have £20 off Kaspersky Internet Security 2009. Use the discount code ONLINE50 to get a further 50% discount. This brings the price down to £9.99 for 1 year subscription or £19.99 for 2 years.
If you need a 3 user license the cost is £14.99 for 1 year or £28.99 for 2.
Great price for a good security suite.