Number 3 on the SSD tweaks thread is turn off hibernation mode http://forums.macrumors.com/showthread.php?t=1505922 "Another feature of Mac OS turned on by default on laptops is, that it saves all the memory to disk when entering sleep mode. This is to ensure your laptop does not lose your work if it runs out of battery while “sleeping”. " By sleep mode does this mean every time I close the lid this save happens? If so does it happen instantly or after a given time? Also if hibernation mode is turned off doesn't this mean if the machine is accidentally unplugged you loose all your work if you run out of battery?