I have been e-mailing Samsung to try and get them to update the Firmware for the HD745 (still v1.0 is only available from their websites for the Europe english model) to address the well documented blacker than black on DVI and the NTSC/PAL manual switching issues.
I guess if all HD745, 945, 850 and 950 owners e-mail Samsung to request a fix (we all share similar issues) then something may happen.
Go on send that e-mail ! Got to be worth a try.......................
Here is Samsungs UK link: