I've had the UT50 for about three weeks, now, and, well...WOW!
I mean, it's amazing. Still waiting on my HD DirecTV receiver, but local broadcast HD is almost disturbingly clear.
However, I've run into odd behaviour surrounding USB/SD card. Using the media player in the TV, it tends to display only one, on rare occasion two, files on either drive, even thought there may be 15 files on it. All are the same format, file names are 'normal', all variable sizes, pressing the INFO button shows this is file 1/1, folder name is /, and number of files is accurate.
Unfortunately, the manual is not helpful stating: How data is displayed differs depending on data storage conditions.
There is not clue one about what affects it and how. Has anyone figured this out, or is it limited to having one file on, in this case, a 64GB SD card, at a time.
Sorry for asking for help on a first post, but this thread is so detailed, it's helped me incredibly, and is mighty comprehensive.
edit: Ah, HA!! I see .mp4 and .vob files work, but .avi do not. Got it.