Usually, when I google for reviews, the reviewer will already mention about the problem, that is the case for FOTR with the green tint (http://www.blu-ray.com/movies/The-Lord-of-the-Rings-The-Fellowship-of-the-Ring-Blu-ray/19929/#Review), and that was the case for Gladiator and the excessive DNR, color change and disappearing arrows (http://www.blu-ray.com/movies/Gladiator-Blu-ray/4735/#Review). Then, if it is a long awaited high expectation movie, it is just a matter of time before the studios announce an exchange program and the info can usually be found by googling it or in audio/video forums.
Here is a list of a few movies that had an exchange program http://forum.blu-ray.com/blu-ray-movies-...t-programs.html
Other movies that have issues are sometimes re-released a few month later as remastered edition (ie: Gangs of New York, The Fifth Element)


Bruno
M80s/VP180/QS8s/EP600/AVR-890
------------------------------------
"The problem is choice..."