Newbie: Where is the crash log information written ? FC2 FC3

[Clive at Rational]

Hello,

  From time to time my Fedora machine crashes and puts
out a lot of data on the "console". I would like to
post this information for diagnostic purposes.
However, when I restart the machine and look in the
"System Logs" list (cron, boot, web server, upgrade,
... etc. ..) there is no trace of the messages written
during the crash.

   Is this failure information written somewhere?

Thanks

Clive