Something, some process or external event is waking it up. Do you have an open internet connection? Or a process that is working in the background, like Indexing?
What happens if you just use the screensaver and not the 'sleep' option?
Mark
Within minutes of putting my HP Desktop to sleep it will wake back up without prompting it to do so. This is annoying when I want to leave it for any lenght of time through the day. It's a 2 year old with VISTA OS.
Dan'l

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