to date there are just over 500 mac viruses. Virus deffinition file are made once a month only 4 mac viruses have been reported widespread In the wild
Mac is sweet indeed
It is linux rewritten to make a SWEET OS and I would never use anything less. My Gateway laptop is only For work which I test networking applications built into mac to see if they will work on a windows network.

BTW: OS X has a small built in firewall like Win XP. we tested and is actually weaker than the XP one :cry: