> > > > > I've been trying to get a realtime kernel running, but every kernel > > > > > I've tried with a realtime patch slows my clock to a crawl, which incidentally i had the exact opposite problem (ntpdate can easily move the clock back 10 seconds, only 5 seconds after it was last run). switching to the RT kernel fixed the issue completely, excpet on both of my machines, the RT kernel freezes after a while (even w.o tainted modules) JACK runs just fine regardless of how skewed the system clock is.. theres a one line patch related to which timer to use, which is in Ingo's tree but not the mainline kernel, try reverting it: see: http://marc.theaimsgroup.com/?l=linux-kernel&m=113249769027262&w=2 and http://marc.theaimsgroup.com/?l=linux-kernel&m=113284371028363&w=2