[woohoo]

TodesAngst

I've just been through a very similar frustration with S3 and know how painful it is. My machine was doing exactly what yours was - going to sleep and waking up either instantly or a couple of mnutes later - sometimes. My problem didn't have anything to do with power failure, but just in case my issue is somehow related to yours...

It turned out to be a networking/media sharing issue for me. It's not clear to me if you're networked or not, but this it's possible it could be your problem regardless. What worked for me was to go to Networking and Sharing and finding I had permitted other machines to media share with my HTPC (I'm not on a Vista machine now, but there might also be an option to look for media on other machines). I turned it all off. I also turned off media sharing on my other PC. I'm wondering if permitting sharing media sharing might generate routine resume from sleep events even if you're not networked.

If you're still stuck, what detail do you get in Event Viewer (Windows applications>System was where I saw my machine was being woken by my network card and led me to the sharing issue).