Just a quick post. In case anyone was interested, this is the default wallpaper from the pre-release distribution of BackTrack 5 R1 that was given out at Black Hat USA 2011 earlier this year. Nothing overly special, but if you were looking for it, enjoy. :)
Edit: For whatever reason, the full 1920x1200 resolution of the image appears to get lost in translation. You can download the original here.