[allan87]

Not a good experience with this build, with either omxplayer or DVD Player as default.

Just to be sure, if omxplayer is set as the default video player, and you never use dvdplayer, and you reboot, things are still worse than usual with omxplayer?

If so, I don't believe this is due to recent changes on newclock3 and may be upstream changes.
Can you confirm if latest chimney build behaves the same? Can you identify the exact chimney build that introduced the instability?

If things only get worse after running dvdplayer, I believe there may be a memory leak provoked when dvdplayer runs out of memory and doesn't clean up properly.
This will make xbmc behave badly until the next reboot.
dvdplayer uses a little more GPU memory than omxplayer, so I'd suggest gpu_mem=256 on a 512M Pi for now.

- on the Milhouse build, omxplayer played choppy even after I deleted the dvdplayer lines from advancedsettings and rebooted (so that omxplayer was the default again). I had not yet commented out the special config.txt lines for passthrough, however. I don't know if that made a difference.
- to be clear, the choppy playback issue and instability issue are two different things. I did not have the choppy, tearing, out of sync playback in the Pi Chimney build.
- I did have spontaneous reboots in playback on milhouse and pi chimney in builds from yesterday. I will have to test earlier pi chimney builds to see if the issue was introduced earlier.
- These are the settings from config.txt which, I understand, have always set gpu at 256 with a 512 MB pi:

Code:

# default GPU memory split (do not change if you do not know what you are doing)
  gpu_mem=128

# SDRAM size based GPU memory split, uncomment and setup to override 'gpu_mem'
gpu_mem_256=128
gpu_mem_512=256