First, just because there are no viruses for Mac OS X does not mean that no one should run this. For a home machine, it is a bit silly. For a business that receives files from everywhere, you should have a good virus software. Sophos is so much nicer than Norton or Virex that I hope they continue to support the Mac platform. I only wish that people would use the commentary option instead of rating the software when they want to make dumb comments. It is good software than can help a Mac user collect a ton of PC viruses and be thankful that they do not affect their machine.