Try applying this updates suggested by MICHAEL:
Have you tried installing these two recent updates?

http://support.microsoft.com/kb/941600
http://support.microsoft.com/kb/941649
--
Andre
Blog: http://adacosta.spaces.live.com
My Vista Quickstart Guide:
http://adacosta.spaces.live.com/blog...3DB!9709.entry
"Lance" <Lance@discussions.microsoft.com> wrote in message
news:0250EBBE-72E0-44ED-A10F-6EEA9394ADBD@microsoft.com...
>I close the lid: Sleep. I open the lid: More Sleep.
>
> I cannot "wake up" the machine.
>
> I'm running a new Toshiba A135 dual-core 1.7g with 1g of RAM.
>
> Since I was having problems with Vista not shutting down properly, I opted
> simply to start closing the lid and putting the machine to sleep. Alas,
> now
> Vista doesn't want to wake up.
>
> Has any "fix" been released for this?
>
> Meanwhile, I find that I'm using my old XP machine more and more often . .
> .