Macs and Antivirus

Yesterday I noticed that the top free app on the Mac App Store was a piece of antivirus software. Very depressing.

Why is it depressing? Now I know there have been a few virus scares on the Mac recently, but on the whole OSX is much more secure than Windows. The problem with antivirus software is that it slows down a computer as it continually checks files and processes for errant behaviour. I’ve noticed that some of the Macs at school run quite slowly compared with my own MacBook Air, particularly with startup times. I suspect that the wonderful SMART software and drivers might be something to do with it, but probably Sophos antivirus is too. I’m under the impression that using Sophos is required by LGfL, but maybe it’s not. And it’s not as if all the iPads can run Sophos either…

…so maybe I’ll try removing Sophos and see what happens then. Am I being foolish and crazy?