I got a spam email typical of those sent from a compromised computer that said 'sent from my ipod' the other day. I replied stating that I thought the named sender had a virus (actually more like trojan). I just got a thank you note confirming that the ipod had a problem.
All you Apple/iphone/ipod users beware! The bad guys are starting to look in your direction. One of my AV affiliate programs recently announced a security suite for MAC.
IT people have always said that the claimed security of the platform was due to the low market penetration so that nobody cared about writing malware for the MAC platform. The world is changing.