I know many people here use AVG as it was recommended here a while back, but a recent update has caused me a real headache. Both of our PCs at home have been running AVG quite happily for ages, but after the latest round of XP updates it has crashed our systems. It makes the PCs reboot continuously! Before doing your XP updates, be warned and remove AVG and find an alternative until a fix is found. BTW - there are MANY people out there on the web complaining of the same thing and some having had to reinstall their entire systems. I'm now using EZ Antivirus on a year's free trial as an alternative.