Laptop power issue

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http://crunchbanglinux.org – It would seem the power settings in Power Management are not taking effect, I recently amended them from the default to suit but have noticed that irrespective of what I set them to now my laptop will always power down within an hour of no use.I've tried setting everything to never on both AC and battery.I've tried ticking and unticking the power options in screensaver > advancedBut no joy at all.Any other ideas or info needed from my machine? (HowTos)