If your computer's a laptop, I'd look at the lid-close switch malfunctioning. Mine did the exact same thing, until I specifically disabled the switch.
If not, I'd guess it might be a slightly marginal component, probable a loose solder connection somewhere. Otherwise, are you certain the computer's still running? Have you tried pinging it, or SSH'ing into it from another machine?
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--m(^0^)m-- Wot, no sig?
If not, I'd guess it might be a slightly marginal component, probable a loose solder connection somewhere. Otherwise, are you certain the computer's still running? Have you tried pinging it, or SSH'ing into it from another machine?
________________________________
--m(^0^)m-- Wot, no sig?