Player pauses sometimes by itself, abruptly, during playback, without there being a significant system load or any other apparent cause for this, and it cannot resume from that exact spot. It recovers playing only when the progress bar is moved from that position. This happened both with the windows version (under Win7 x64) and in the linux one (Linux Mint 10 x32).
Very odd behavior, would it be possible for you to post the log file so we can review it? (just open the same media file that exhibited the problem, and when the problem occurs select Options -> View logs -> MPlayer / UMPlayer and copy and paste the two logs for us to review).
Thanks in advance!