FC12 -- Strange system crash

[Robert Moskowitz]

FC12 on an HP nc2400.  Recent install, Dec 31st.  Uptodate as of 
1/19/10.  System uptime was 14 days with many updates over this time.  
System was beginning to bog down, I was considering killing Firefox 
(over 20 browser sessions open with multiple tabs) and was opening a 
.pptx doc here at the IEEE 802.15 meeting.

Why things were slowly working on opening the document, I noticed the 
fan going to full speed and then the video did a bright flash and the 
system was off.

I had to power back up.  I watched all the inode recovery for all the 
docs I had open.  Once I was logged in, I checked /var/log/messages, and 
of course there was nothing there prior to the boot messages (prior 
message was an dhcp message for when I moved from my hotel room on the 
hotel wireless to the conference room to the conference wireless).

Of interest was my system had lost its time setting.  It was showing me 
in Boston, when I had come from Detroit and was currently in Los 
Angeles.  When I changed my location to LA, it was still showing my time 
off by 2 hours.  I had to turn off ntp, manually set the time, then 
reset to use ntp.

I don't have any idea on how to trace this down and MAYBE submit a bug 
report.  I might think it is ACPI related as the fan turned up to full 
speed just prior to the crash.  I has a similar crash shortly after the 
FC12 install.

Thoughts?