i've also tried a bunch of regular dvd and blu ray movies and the netflix streaming disc. i just tried with the movie '9', district 9, transformers 2 and drag me to hell on blu ray and i tried serenity, spider-man a bunch of robotech dvds and some space battleship yamato dvds. for all of them, the exit command does nothing. the red led on the ps3ir-500 blinks, but the ps3 doesn't do anything at all. if i hold down the exit key, i get prompted to power off the ps3.
with the controller if i press the ps button i immediately get prompted with "do you want to quit playback" and if i hold down the ps button i get asked if i want to turn off the system or the controller.
with the remote the latter happens (holding down exit asks me to shut down) but just hitting the exit hey, as i described above, does absolutely nothing.