Hi Bob: I also recently bought an XPS  8300 (nice system!) that came with McAfee pre-installed. I have to tell you that I never activated McAfee, and uninstalled it ASAP. I did so based on my personal history of problems with McAfee (admittedly many years ago) but also because of the numerous problems reported in this forum over the years with this AV. McAfee has not fared well at the independent testing web-sites I trust, and I don't understand why Dell continues to bundle this troublesome AV with its PCs. I can't comment on AVG,  which I left years ago. I've used the free Microsoft Security Essentials (MSE 2.0) on this system, with no regrets. To be honest, if you are using Windows 7  behind a hardware firewall, and practising safe surfing,  I don't think it matters a whole lot which AV you use. But I still recommend MSE as the simplest solution.
Hi  every one its been a while  glad to see the same great people are still here I've bought a new XPS 8300  & it comes with 18 months of McAffee Is it still a poor choice & should I dump it & stay with my AVG, my old  faithfull I also still run Spybot S&D, MBAM, & Spyware Blaster, along with my D-Link router for my firewall Am always will to listen to any suggestions the group has to offer Thanks to all of you Bob
McAffee