I'm sorry to report that the extremely popular Open Source Screen Recording software CamStudio has been infected with the Artemis!935C478B6850 trojan. I had recently installed CamStudio in order to produce a tutorial video, and I began to notice a ton of new applications popping up and marked decreases in performance. Guess its time to dust of those Windows 7 install discs....
A search of wikipedia yields some disturbing results.
Although I have been using CamStudio for years now, I recommend you seek out alternatives to this software. Further exploit information can be found at HerdProject.
Some people are Using VLC to capture/transcode their desktops, though I've had mixed results.
Mac Users can use a little known feature in Quicktime Player.