Many people have problems with vista resuming from sleep and/or hibernation.
Hopefully this is one of the things fixed in SP1.
there are a couple hotfixes available,
http://itsvista.com/hotfixes/ but
none of them resolved my issues with waking (I'm having the exact same
issues you described).
"Daniel Royer" <> wrote in message
news:...
> When my PC (Vista home premium up to date) goes to sleep, I can wake it up
> by:
>
> 1) Hitting the space bar or moving the mouse
> 2) If this doesn't work, pushing the power button lightly wakes it up
>
> BUT
>
> 3) sometimes none of these things work, and I have to completely shut it
> down and restart it.
>
> The time it was asleep is roughly the same (overnight) in each case.
>
> Any idea?
>
>
> Daniel
>
> --
> ________________________________
>
> Daniel Royer
> University of Geneva
>
> ________________________________