Phase One Raw File have lines in them (Lightroom 2.1 ACR 5.1)

Question

when importing Phase One P25 raw files, Lightroom is displaying tin lines across the image. those lines are not appearing in any of the Capture one Software 3.7 4.1 or 4.5 I guess ACR is not reading the Digital Back Calibration Data. I am managing thousands of Images in Lightroom and I don't want to move back to Capture one as it is very limited in terms of its meta data management and no spot removal yet.
if I convert the Raw file (IIQ Small or Large) to DNG using Capture one then Lightroom reading the DNG file without the Lines but the file size is 44MB instead of 15MB of the IIQ Small (Phase One Raw Format). obviously duplicating all my images to DNG Quadrupling disk space is not something I want to add to my workflow.
Adobe, can you improve the way you read the Phase One Raw Files?
I use Phase One P25 Digital Back with the latest firmware 3.6 , Windows XP 32 and 64bit and Lightroom 2.1 (this problem appears on all Lightroom Versions including 1.4,2.0,2.1)
I can send to adobe some Raw File Example or assist in any way I can to find a solution.
Please Help!

Answer 1

Following does not alleviate the problem, but it may shed some light on the underlying reason.
Phase One are fooling their customers with the promise of 16bit depth. However, in fact that is only 14 useful bits; the two low order bits *must not* be used, for they represent mainly the pecularities of the hardware.
The following capture is from a P25+ raw image (converted in DNG by the Adobe DNG converter), but only the two low order bits are processed. These should be random on their own, as theoretically they would represent the finest transitions. The two thin vertical lines show the seams between the chips; their location depends on the particular camera copy (I have seen one or two seams, i.e. the sensor is made out of two or three chips, but perhaps there can be more).
The horizontal stripes cause posterization if an extremely underexposed image's brightness gets adjusted; the seams can become visible as thin lines.
The image is in the "native" (landscape) orientation. The orangy rectangle is not part of the image.
http://www.panopeeper.com/Demo/PhaseOne_P25Plus_SensorSeams.GIF