I was just going through the Mac Apple forums and I read an article it stated that for the desktop Mac Apple recommends the Sleep mode instead of a power down if you are not going to use your Mac for few days. Even for the Laptops they recommend sleep mode instead of power down, if you are not going to use it for long time. There engineers state that frequent ďinrushĒ of current can affect some components, and frequent heat and cold cycles can will harm the system. When the Mac is put in the sleep mode most of the things like disk, display are powered down, but some amount of power still remains for some of the components. But at the time of power down you completely shut down the computer and there is not even a single watt of power supplied to the MAC. I want to know what the exact difference between Sleep Mode and Shut is down in MAC OS X Lion. Can anyone explain me this please. Itís very confusing so want some help in regards of this.