18 month old 7.2 FreeBSD dfw1.psg.com 7.2-STABLE FreeBSD 7.2-STABLE #1: Sat Aug 22 08:37:36 UTC 2009 root at dfw1.psg.com:/usr/obj/usr/src/sys/DFW1 amd64 csup and o make buildworld o make kernel o boot single user o locks up right after beastie, one twirly and locked boot verbose is reticent reset, boot to old kernel, all normal how to debug? randy