Are you running an Nvidia video card or ION system?
EDIT: from the log looks like ION. There is a bug many people have where starting a video will lock up xbmcbundu, if the same thing is happening with other files try highlighting and wait 10 seconds then hit play/enter.
When you say a specific MKV, is it only happening to that one file, other MKV you can play fine? If it is only that one video, what type of video and audio stream was ripped? What if you re-rip it?
btw I hope xxx.mkv is the movie with Vin Deisel... lol
Looks like an alsa issue with audio (but what do I know)
Code:
23:34:11 T:2910841712 NOTICE: Creating audio device with codec id: 86019, channels: 2, sample rate: 48000, no pass-through
23:34:11 T:2919234416 NOTICE: (VDPAU) screenWidth:0 vidWidth:1280 surfaceWidth:1280
23:34:11 T:2919234416 NOTICE: (VDPAU) screenHeight:0 vidHeight:720 surfaceHeight:720
23:34:11 T:2919234416 NOTICE: Creating 1280x720 pixmap
23:34:19 T:2910841712 WARNING: CDVDMessageQueue(audio)::Get - asked for new data packet, with nothing available
23:34:19 T:2910841712 ERROR: GetDelay - snd_pcm_delay, alsa error: -32 - Broken pipe