This year, there's a new rule implemented that in order to use Wifi, one must have Antivirus installed to protect the University's files, even on a Mac. Truth be told, I absolutely cannot stand antivirus, and have never used one on any of my personal computers, even Windows. My opinion is that they vastly slow down the machine, especially at startup. Currently I'm using Sophos, as the university recommended/forced, but I added the whole hard drive of my computer to the list of exceptions for virus search. Is there any better alternatives?