The Criterion Collection announced via its blog today that certain discs from its catalog that were pressed in a replication facility in 2010 have become defective. Replacement instructions were also provided with the official statement, which is attached with this news article.

Official announcement:

"We have confirmed that certain Blu-ray discs pressed at a replication facility that we used for a period in 2010 have become defective, showing a noticeable bronze discoloration on the underside and developing playback problems. We have confirmed the problem on seven titles, though not on all copies of those titles. All of these titles have since been re-pressed at a different pressing plant, and the vast majority of discs in circulation should not be affected.

The potentially affected Blu-ray titles are:

Howards End
M
Paris, Texas
Pierrot le fou
The Seventh Seal
Summer Hours
Walkabout

If you have found that your Blu-ray copy of one of these titles does not play, please send your disc to the following address for a replacement:

Jon Mulvaney
The Criterion Collection
215 Park Avenue South
5th floor
New York, NY 10003

Please include only your disc—no packaging—along with the address to which you'd like us to mail your replacement. We will not be replacing or exchanging packaging. There is no need to email us in addition.

If we learn that other titles are similarly defective, we will add them to this list and continue to replace them as well.

Thank you for your patience and understanding."