Auto Reboot after about 20 Mins of Inactivity

I have looked on the forum and not seen anyone with this issue, as I don't think it is related to the "Sleep" question everyone has been asking, so here goes. I have an Acer Aspire One 150, installed Dual Boot XP/OS X, when running OS X all works fine have 10.5.5 installed along with PowerManagement/Battery Indicator, Dell 1390 Card, Sound, etc.... The only issue I see that remains for me is that every 20 minutes the machine tends to reboot itself without me doing anything (20 mins of inactivity). I did try and install InsomniaX on the machine but that hasn't seemed to work either. I can work continuously on the machine for hours without this issue occuring, it only happens when inactive for a period of time....has anyone else experienced this issue.....

Thanks
David

 

Hmm... Have you checked your energy saving settings under system preferences? I think it may come configured to sleep after 20 min of activity, and because sleep isn't working it is opting to reboot. That's my only guess. Good luck

 

Thanks, I believe that setting to "Never" in Energy Saver" should work, I wasn't sure where to find the auto sleep feature. Greatly appreciated, I should be good to go now.