This issue is also holding me back from purchasing another 3 units. I have been evaluating competitive cameras as well, so if they are going to fix this, they should do it soon. I do wonder how in heck they ever thought this performance was acceptable? Or, maybe they just do a poor job of product testing and rely on us "beta" testers to find these things.
I have also DCS-2230 camera and I have never faced this problem with this camera, so I would like to suggest it to all people that need a professional camera with Full-HD video quality. Unfortunately this camera, at the moment, remains with the first firmware issued (only italian and russian users can use an updated firmware). Logically with DCS-2230 we go in another price range (about 200 euro in Italy), but its price is even good if we consider that it is a Full-HD IP cam (in my humble opinion, nothing to do with standard VGA quality IP cams!!!).
Anyway I hope that D-Link may solve this problem of DCS-942L cam, because this cam, with the latest firmware (1.11 - now signed WW in so many countries), is becoming more and more professional.