Mac Trojan

Bottom line - pirating software via sources you don't know is rarely a good idea. And once you do so and voluntarily install it, you have only yourself to blame.

http://www.boygeniusreport.com/2009/01/23/trojan-virus-spreads-to-as-many-as-20000-macs/

later another report (from Comp Risks) says it's also being distributed by a Photoshop crack.

Meanwhile Windows users have no cause to celebrate - the latest worm to target windows vulnerabilities is estimated to have infected millions of PCs.

http://www.nytimes.com/2009/01/23/technology/internet/23worm.html?_r=1

A good time to be a bit paranoid about security...