I am looking for free new protection for my pc.I have windows xp .what is the best.?

I used to have norton ,then i used the free zone alarm with adware spyware.I was then given a mcafee disc for the last year(security suite) but it runs out today.I found when i installed it on pc it made it extremely slow and its very slow to scan.So im looking for something free that doesnt slow my pc and offers good protection.Also something that doesnt take all day to scan! Ive been looking at avast, avg and zone alarm.Anyone got any comments on these or recommendations?

thanks

I am looking for free new protection for my pc.I have windows xp .what is the best.?download

I have used AVG Anti Virus, Zone Alarm Firewall, Spy-bot Search and Destroy and Ad Aware both spyware killers for years. They are all free for personal use and I have had no trouble with Viruses Trojans etc. AVG does not slow the system down as much as some other products and Zone Alarm allows a lot of personal configuration unlike the Windows Firewall. They can all be downloaded from the following linkhttp://www.computeractive.co.uk/. On the home page select downloads and then the appropriate category.I also use Windows Defender from the Microsoft site. It is safe to use two anti-spy products but never use more than one A/V as it can cause conflicts. You should run A/V and anti spy weekly. Hope this helps

I am looking for free new protection for my pc.I have windows xp .what is the best.?hijackthis