There certainly seems to be a glitch if those 301s have been in place all that time. From what I see when checking your redirects (which are all in place and working), I would expect to see your preferred .com in the index and SERPs rather than the hyphenated .co.uk version that is actually showing up. Google reports the same subset of IBLs for both.

One thing, glitch or not (and I have my fingers crossed for you regaining your positions), quite a lot of your reported IBLs as shown on Google "link:" (yeah, I know, shows what it wants regardless of reality) are from forum sigs, and from product listings that may go out of date. To firm up your preferred domain in the index and SERPs it is probably worth getting some more relevant, heavy duty links from more persistent content pages on good sites.

That said, it may be part of the UK hosted .com thing that has been generating discussion. See http://www.webproworld.com/viewtopic...er=asc&start=0

Good luck, Simon.