For the last month or so, owners of Universal titles like 'Children of Men' and 'The Good Shepherd' have been complaining about playback issues. While the company quietly cancelled other combo HD DVD/DVD releases, they did not publicly acknowledge the problem until now. In a statement made to High-Def Digest, Universal has announced that they are looking into the problem and will be offering replacement discs to those affected by it.
While the studio had been mum on the topic for over a month, today they issued a statement to High-Def Digest acknowledging the problems, and initiated a disc replacement program for affected consumers. The studio's full statement follows below:

"Universal is currently investigating reports that Children of Men, The Good Shepherd, and select other discs not playing properly in some HD DVD players. While we believe this is limited to a small number of HD DVD discs, Universal is offering a replacement service for any customers who are experiencing this problem. We are still investigating the cause and will provide further updates as we get them. Any customer problems should be directed to This email address is being protected from spambots. You need JavaScript enabled to view it.."
While I must commend Universal for offering replacement discs, they should have responded to the problem much sooner. If you'd like to read more, head on over to High-Def Digest.