First of all thanks so much to the developers.The main feature of this app is great. I wanted to use this application for my downloads overnights ,but since the hard access of downloading process prevents mac to go to sleep at the time that has been specified in power setting in mac os x , i used this app. Apparently this application disables the display sleep time that's been determined in system preferences,and so for example if I put the laptop not to sleep for 5 hours (by this app) the display also will be remaining on for 5 hours either! hope this issue get addressed. Regards.