This is the first time for me. I was watching Olympic figure skating (DVR'ed) and saw Johnny Weir having his name written in Russian on his skates. So, I wanted to google him and see why his skates had Russian spelling of his name. I guess I clicked on a link to a Russian web site and immediately got a message that my computer was infected with a virus and offering to scan my Mac. I tried to click on cancel, but what I saw was an image of Windows Explorer. So, I figured, hey this is a Mac, so nothing serious had happened, but then I noticed that Safari was downloading a file. I tried to stop the download, but it would not stop. Then, I was able to force quit Safari (after several unsuccessful attempts) and then deleted the downloaded .exe file (which I was able to stop in the middle of the download by force-quitting Safari). But then I noticed that my network drives were no longer visible, so I restarted the Mac, and had all kinds of problems trying to connect to my network drives. Finally, after deleting the .exe file and emptying the trash can, I decided to get some program to scan my Mac for viruses or Trojans. Well, I stumbled upon Kasperski for Mac, which apparently was just released. They offer a 30-day free trial version, which can be extended past the 30 days by purchasing their software for XXX/year (redacted by author due to objections) for one license or YYY/year (redacted by author due to objections) for three licenses. After configuring Maximum Protection and running the Full Scan, about 40% into the scan (about 40 minutes), Kasperski started popping alert messages about the codec.exe Trojan. I have just googled this Trojan and came across the following Wikipedia article: http://en.wikipedia.org/wiki/Zlob_trojan So, this is a warning for everyone that it is possible to get your Mac infected just by clicking on a legitimately looking link on a Google search page. I don't know how serious this Trojan is (sounds pretty serious from the Wikipedia article), but I can vouch for the fact that my Mac suffered some serious disruptions due to the infection. Supposedly, this Trojan was developed by the Russian Business Network (RBN), which is an outfit connected to the Russian Mob and is considered to be the "baddest of the bad" by Verisign. Here's the Wikipedia article on this outfit: http://en.wikipedia.org/wiki/Russian_Business_Network Strangely enough, my Time Machine kicked in while Kasperski was doing the Full Scan of my Mac, and Kasperski found the codec.exe on my Time Machine volume in tonight's backup. I am not sure if Kasperski launches Time Machine during every Full Scan, or I was just lucky that my Time Machine volume was mounted while Kasperski was running, so it went ahead and scanned that volume as well. I have never heard of this happening to anyone else. I am going to continue to run Kasperski for 30 days that the trial version is authorized for, and then I will make my decision on whether or not to purchase the annual subscription for 3 Macs in my household. (Comments by author: don't be so paranoid - this is not an ad). Edit: Actually, forget about everything I said here and continue using your Mac without any protection.