MBP often won't wake after sleep.
It sounds like the hard drive starts up (there is some noise) but the screen remains black and the keys have no effect.
The only way to get out of the situation is to hold the on/off button until it switches off.
Upon start up no work or application windows are recovered!
This has caught me out a couple of times and I have lost work. It is very frustrating.
Has anyone had similar problems and/or does anyone have any suggestions.
I cannot take it in to a shop to be checked for the next few months as I simply can't afford to be without my laptop!!
MBP (late 2008), Mac OS X (10.5.8), purchased quite soon (half a month to a month maybe) after new model was released