[unfletch]

Could be, it is in front of the monitor, but it's flat on my desk in more or less the same place shown in most of their demo videos.

[nitrogen]

I wonder if your monitor's backlight puts out an inordinate amount of infrared light. I've noticed interference with IR remote control reception when one of my LCD monitor's backlights is turned down close to minimum brightness; I'm assuming that the PWM dimmer frequency (or one of its harmonics) is making it through the filter used by the IR receiver.