Buffer underrun

[salsolo]

I have run into this weird problem with a specific type of file .. mts created by a Sony Camcorder.
When I try to stream it through UMS the file itself starts playing but after a little while it starts to stutter and when I then stop playing it all filetype afterwards will show the same behaviour. If I then close UMS and restart it all files still stutter and will not play properly. It turns out java locks up and I need to kill the java process to recover. Then I can restart UMS and all other filetypes works as usual. If I then try it again the same behavoiur is observed.

I have attached debug files - when I look into it there is an entry aorund buffer underrun when playing.
Thread-81] [vob @ 047fa3e0] buffer underflow i=0 bufi=245174 size=397567
DEBUG 2013-03-02 10:46:03.433 [Buffered IO End Checker] Stopping process: ffmpeg.exe-22
DEBUG 2013-03-02 10:46:03.433 [Thread-81] [vob @ 047fa3e0] packet too large, ignoring buffer limits to mux it
DEBUG 2013-03-02 10:46:03.433 [Thread-81] [vob @ 047fa3e0] buffer underflow i=0 bufi=245174 size=397567
DEBUG 2013-03-02 10:46:03.433 [Thread-81] [vob @ 047fa3e0] buffer underflow i=0 bufi=247198 size=397567
DEBUG 2013-03-02 10:46:03.433 [Thread-81] [vob @ 047fa3e0] packet too large, ignoring buffer limits to mux it

Anoyne have any idea?