Hey, I have the SHM-165P6S and I could not read any of the discs that came in my company's Action Pack Subscription, (Microsoft Office Accounting Professinal 2007, Microsoft Windows Vista Upgrade Business, Microsoft Office Enterprise 2007, Microsoft Office Contact Manager etc...) and I got really frustrated thinking it was some new Anti-Piracy technique on the discs, but it ended up being the media/drive combo; It was really weird! I bought a Lite-on SOHC-5236V from a local Wal-mart (hey, it was the only thing open at 9:30pm) and it worked like a charm. Out of curiousity, I performed a disc copy using Nero to known working media and re-attempted to load the media and it worked like a charm.
For some reason some of the Lite-on drives do not like the media being shipped out from Microsoft...
Bottom Line, I plan on taking back the drive to Wal-mart for a refund as I got what I wanted. LOL ; ) . I plan on hunting down the DW1655 as I now realize I can never really rely on just one drive.
But to answer your question, it is the media and drive combination that is causing the "clicking" noise and no-disc-read. I am 100% sure on that.