[Gllug] Mysterious reboot

[Wiehe, Simon]

Hi,

I got home from work today to find that my machine had mysteriously 
restarted. It is normally up for weeks or months without the need to 
restart and over the last 4 years I have never had this happen, and 
I leave the machine on 24x7. I have checked the syslog etc. and I can 
find no reason for a shutdown, just a message in the log that states 
restarting. Does anyone have any idea why this might have happened, 
surely if there was a failure I would not get restarting in the log. 
I thought about power and we had no power problems at that time, the 
only other thing I can think of is the temperature, it was running 
at 45 degrees, normally idles at about 47-49 degrees, but again I 
would not have expected to see a restart message, just a starting 
message if the machine had died unexpectedly.

Can someone help me to where to look to investigate further?

I am running Ubuntu Breezy.

Thanks

Simon

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