Update from 188.8.131.52-30 to 184.108.40.206-55.fc9.x86_64 causes kernel panic on x61
I've used the automatic update to migrate from a Fedora 9 kernel 220.127.116.11-30 to 18.104.22.168-55.fc9.x86_64.
My machine, a Lenovo X61 which worked OK with the old kernel, now boots fine, but after the first few seconds of running Gnome as a user the machine has a kernel panic (frozen, Caps lock blinking).
The problem is entirely reproducible, but I was not able to find any relevant log messages in /var/log/messages. Where else to look?
As far as I can tell there's no previous post on the subject matter. Any help would be appreciated.