I was having a discussion with my friend who is a strong supporter of Linux and open source in general. I showed him how easy it was to install programs just with the dmg file. Just drag and drop. He was then saying it would be easier for the mac to get a virus than the Linux architecture because it does not ask for the password when you install the program. I did not know how to fight back on that one. He also said it is an easier path for the virus on the mac than it is on a Ubuntu machine. Do you guys have any advice on this?