Last night, for the second or third time since I upgraded from C6 to c7
this summer, I did something on firefox – I think it was reload a page, and my system rebooted.

Yes, I have a ton of tabs open. I see nothing suspicious in
/var/log/messages, or in /var/log/dmesg.old. I saw a mention of boltd? I
think, but nothing more.

Has anyone else had this problem?

mark