CNET and Wired (and other sources) are reporting that a class action law suit has been filed against Samsung that allegedly refused to provide firmware updates to some Blu-ray players that do not play certain titles correctly. The Wired article speculates that the problem(s) may have something to do with firmware that cannot handle correctly the BD+ copy protection technologies.
According to Wired, other players do not evidence similar problems:
...The PS3 as well as various other Sony and Panasonic models were able to play the titles [Fantastic 4: Rise of the Silver Surfer and The Day After Tomorrow] without incident, but only after owners downloaded a firmware updates provided by those companies.
The underlying problem in all of this is that because players, specs and DRM schemes are constantly evolving, manufacturers are increasingly reliant on firmware updates. As the Samsung lawsuit seems to indicate, not all of them seem to embrace this state of affairs.