my problem:

two MIDI keyboards ->

   1.with MIDI cable to presonus VSL1818 - zynaddsubfx

   2.with MIDI2USB - setBfree

everything goes fine, but sometimes (often after a one hour of playing ) the sound is suddenly distiorded or glitched ( i dont know the right word..)

no xruns...

in everything.log I 've found hundres lines of:

Sep 30 09:04:41 bookes slim[322]: Info, other non-handled midi event, type: 36

my limits.conf