Today I was building a new monster FreeBSD 4.10 server with PAE enabled. Booting the new kernel I got this little gem of a prompt:

The normal boot messages, and then…
AP #3 (PHY# 7) failed!
panic y/n? [y] _

I tried ‘n’, but unfortunately the kernel was in no state to accept input from the keyboard. One must wonder why it even bothered asking whether it should panic then.