PC-cillin Internet Security 2005 [AntiVirus, Firewall, Spam, Spyware, Wi-Fi Patrol] review:
5 stars (Trend PC-cillin Security 2005) - I like the software! It picked up vulnerabilities that Norton Internet Security had not. I'll likely stick with this software for my virus and other security control issues.
5 stars (It works) - I have used Norton, McAfee and PC-cillin and PC-cillin is by far the best program. McAfee found nothing in a three month trial and Norton was a resource hog with installation problems and caused delay write failure errors on our network. I have been running PC-cillan at home for three months and at work for a month - No installation problems, doesn't slow the system by much, hasn't caused any problems I am aware of, quick downloads and removed two viruses Norton couldn't. It is probably just a matter of time before code bloat and corporate management trash another good product but for now this appears to be the best out there.
5 stars (Switched from Norton to PC-cillin with no complaints, and my computer seems HAPPY!) - I have been a Symantec and Norton cusmoter for over 6 years, but I started noticing poor performance with my computer. I found that Norton was becoming more and more invasive on the control of my computer. I was having all sorts of problems especially with system resources being taken up by Norton. I did some upgrades to my PC (sound card, video card, more RAM, DVD burners, bigger hard drive, etc.) Norton committed suicide or something as it was not protecting my computer and prevented uninstallation. I had to do a system restore to a point prior to the new hardward additions, uninstall Norton, reinstall all the new hardware, and then go offline until I could find a new virus/internet protection. I found that almost all of the virus protection software has its share of complaints. Many reviews explained the ups and downs of PC-cillin, Zone Alarm, McAffee and many others, so I took a gamble on this product as many reviews explained good results switching from Norton. I have been very happy with it. I have had no problems with it. It has found other viruses and spyware that Norton did not. My computer has been running extremely smooth ever since. If you are having problems with Norton, then I highly recommend this as a replacement.

PC-cillin Internet Security 2005 [AntiVirus- Firewall- Spam- Spyware- Wi-Fi Patrol] is the CD-ROM version. The full version can be purchased by clicking on the "CLICK HERE TO ORDER" button below for around  38.49USD.