It's the same with a PC though, use decent security software and you don't get problems. My two Windows 7 machines or their any of their Windows predecessors never got and problems from Malware, it's just a myth that Macs are superior in that respect. Frankly as long as you know what you're...
Funny you say that, this months PC Pro (which writes about all types personal computers) say that it is an issue with Macs. Might also interest you to know that in fact DOS, which Windows used to be based on is also a subset of Unix. Believe me if you think that Macs don't get malware then...
Apple have been attacked in the press lately for not supplying a free Anti Virus and Malware package. Due to the vast number of Ipad and Iphones people are now writing viruses for them. One to watch out for is Mac Guard, a spoof that asks you for money to get rid of the virus it created. Put a...
AVG, Avast, Avira and the Microsoft Security Essentials are all free and a whole lot better than McAfee. A lot of firms give McAfee away, Dell and BT amongst others but it is useless, I speak froma lot of experience and I find it staggering that so many corporate users still use it.
Try downloading MalawareBytes or IOBit Malware Fighter from Free software downloads and software reviews - CNET Download.com, both should sort you out. What A/V are you using ? I'll bet it's McAfee, AKA 'Why Bother ?'