Dear all, I hope to find here an expert who knows an answer to the following problem: I am running Matlab on OSX 10.9.5 started from the Xterm, and I am not able to run lengthy jobs because at each logout (which occurs after 2h), Matlab crashes, all results are gone (if they are not save to the HD and XTerm closes. I start Matlab form the XTerm (and not by clicking the App Icon) in order to be able to run system (unix) commands within Matlab. I guess, this behaviour is proper to XTerm, and in case I could find an other way to run system commands from Matlab, probably this could be resolved. Could it be that the running matlab job is not visible to the system which goes to sleep?? For info here the power management info: $ pmset -g custom Battery Power: lidwake 1 autopoweroff 1 autopoweroffdelay 14400 standbydelay 18000 standby 1 ttyskeepawake 0 hibernatemode 3 gpuswitch 2 hibernatefile /var/vm/sleepimage displaysleep 2 sleep 0 acwake 1 halfdim 1 sms 1 lessbright 1 disksleep 10 AC Power: lidwake 1 autopoweroff 1 autopoweroffdelay 14400 standbydelay 18000 standby 0 ttyskeepawake 1 hibernatemode 3 gpuswitch 2 hibernatefile /var/vm/sleepimage womp 1 displaysleep 3 networkoversleep 0 sleep 0 acwake 0 halfdim 1 sms 1 disksleep 60 Many thanks for help! Markus