For you Linux users, I found a neat way to run D2OL in the background that is almost invisible to the system. (Actually I pieced parts together from the D2OL message board from a post I made about changing the priority.)
It does not seem like I lost any computation time with this, but your results may vary if you have more processes. This runs without a status window.
The quick answer is to first change the line in SengentD2OL/D2OL/res/control.prp
LaunchMain=true to
LaunchMain=false
and then (for RedHat 9; others may vary)
nice -n 19 ./D2OL controller:file &
From the same directory as your D2OL executable file. Although I did not receive a response on how to stop that process properly, I only reboot the computer once a month anyway and rebooting always stops it of course.
Here is the long thread below for those interested.
http://www.d2ol.com/...ic;f=7;t=000620