The Mac has a thing called safe sleep where it saves your memory to disk when you close the laptop. This is good because if you lose power it takes you right back to where you were. This is bad because it can take a while, especially if you have a lot of memory an sometimes confuses things if you close and open too quickly.
Smart sleep gives you the best of both worlds by only switching this behavior on when your batter is below some user defined level.
The Mac has a thing called safe sleep where it saves your memory to disk when you close the laptop. This is good because if you lose power it takes you right back to where you were. This is bad because it can take a while, especially if you have a lot of memory an sometimes confuses things if you close and open too quickly.
Smart sleep gives you the best of both worlds by only switching this behavior on when your batter is below some user defined level.
http://www.jinx.de/SmartSleep.html
This should be the default behaviour! I will be sad if it's not in Snow Leopard.