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[ubuntu] Finding information about spontaneous reboot

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linux-howto

http://ubuntuforums.org – Good morning. I installed Ubuntu two years ago (10.04, I think...) and I am still a complete newbie. I'm very happy with it, but there are still lots of things I don't know how to do. This morning my 12.04 spontaneously rebooted while I was away for two minutes. It was displaying a full-window Firefox tab. I didn't have any other programs opened. I checked for updates after the reboot (everything looks like it is working fine), and I got asked to install 23Mb of updates. Where can I find information about the reboot? I used the Log Reader to read kernel.log and kernel.log1 (because I read (Hardware)