Re: Running anti-virus software on...
Darn it! I meant to download that Virus Scanner when it was offered free that day too... completely forgot!
Ah well... I've never (99% certain) had a virus on my Mac. In fact, I'm not aware of any viruses for Mac in the wild. Sure there are a couple of bits of malware floating around on..er.. unsavoury sites (so it's been reported)... but I'm very careful where I visit and what I download.
I remember when iWork '09 was released reading about a torrent site where some people downloaded a cracked version which had been "infected"... another good reason to steer clear of pirated software IMHO.
OSX is a very secure operating system unlike Windows. As it becomes more and more popular it might well be that hackers/virus writers begin to target it more...
... and although there are no known viruses designed to attack the Mac I've come across I know that we can still be "carriers" for viruses - which may be sent on to and infect our PC friends...
The last time I seriously tried an Anti-Virus app on my Mac was in 2004 I think... it was the then current version of Norton anti-virus... a complete waste of time, resources and bogged my system down with no added benefit.
In general my moto is to browse safely, download only from sites you trust, install applications you trust and keep backups of your system drive.
Having said all that it would be interesting to know your experiences using MacScan.
Let us know!
p.s. there's a good app for Mac called "Little Snitch" that tells you when any app/service tries to "contact home". I use that occasionally - as I'm curious just how much Google want to know about me!