I had been having the awfullest trouble with pure data locking up , I figured it was plain ol too much processing, then I noticed that qjackctrl was stopping jackd so I started using patchage instead and ran a lot longer till just when I was ready to respond to this till jackd hung up and left the mouse moves stopping at a regular interval, the mouse clog did not stop after I killed all the processes(couldn't be done from task viewer) but only after jackd was killed