I've iOS 4.2 and the last beta version of aTVFlash installed.
I've noticed a strange behaviour. The white led sometimes turns on by itself and then after one minute or so, it turns off again. If I quickly switch to HDMI while the led is on I cannot see anything, that means the video part is off.
Eventually I'm unable to understand what it's really happening during the time the led is on. Has anyone noticed the same behaviour? It's quite frequent, say two/three times an hour.