> Ah, okay, you jus' gotta know when to stop. ;) After recompiling my kernel, working great, I can use jackd perfectly with a frame/period of 256 instead of 512 with 3 periods (latency of 16ms) with no xruns even with my heavy load setup : terminatorX-ecasound-ams-(timemachine|darkice) in fullduplex at 16/48 - at 128fp I have one xrun under brackets eachtime I click on "Mouse Grab" in TerminatorX, but there is no clips or pops so perhaps I can use this during a live session ? - at 64fp I have one real xrun each time I click on "Mouse Grab" in TerminatorX and with clips or pops and a bunch of xruns under brackets each time I scratch Thanks a lot Clemens ! Regards Philippe