That's a slightly different thing there possibly related to the SLT mirror (though I've not seen any issues with that so far)
This is clearly a sensor limitation, and not widespread to lots of cameras. I can only think it's a design oversight which has slipped through.
I did manage to get some compensation off Sony regarding the "months" of delays whilst trying to repair the camera (after annoying the heck out of them on facebook), however I suspect that some types of photography are not going to be practical with this model (night photography in some cases)
The Sony person I spoke to sent this to the top EU imaging team, with the response I got that this was "normal for CMOS sensors" I got conflicting information in the past, including the green line was fixed on one repair.
Reading between the lines they just won't admit it's a fault and it's swept under the carpet. I was offered a full refund but accepted a voucher and they also sent me a 18-135mm lens with the replacement body for some odd reason. I considered that covers the cost of the camera, but no the issues isn't resolved in relation to the sensor. It just means I effectively paid nothing for the camera after kicking up about it!