As I write this, Qjackctl shows 14:35 since the last X Run!!! I don't have this completely narrowed down as to the offending program(s), however what I did was open the System Monitor and began stopping programs I thought were either likely offenders or simply unnecessary. One thing I didn't realize was that Evolution (linux mail client), despite not being my default mail client and not being active still had 4 programs running - remains to be seen if that's the culprit. Here's what I currently have stopped: ntpd evolution-alarm-notifier evolution-data-server-1.10 evolution-exchange-storage evolution freshclam update-notifier gnome-screensaver getty (there were 6 instances of this running, all showing the identical amount of memory being used - I left one on and stopped the other 5 - no idea what this is - will research it further - but doubt this has anything to do with the X run issue, since one is still running) FYI: I'm now at over 22 mins without an X run, still at my 2ms latency setting and I happen to be watching an HD movie at the same time! (and no, it didn't take me 8 mins to write this - had to have a pillsbury turnover break for fortitude ; - ) I'd really like to thank everyone that helped me with this issue - one of the best things about switching to linux has been the community - thanks guys!!! Hartmut Noack wrote: