Machine was happily chugging through the 'make install' part of a make build,
I had just rsh'd a tail-f to it to watch how it was going, and before long
it got this:

panic: pool_get(mclpl): free list modified: magic=f00; page 0x3598000; item addr 0x3598000

_Debugger
_panic
_pool_get
_mb8795_rxdmamap_load
_mb8795_rint
_xe_rint
_isrdispatch_autovec
_intrhand_autovec
_mi_switch
_tsleep
_sbwait
_soreceive
_nfs_receive
_nfs_reply
_nfs_request
_nfs_getattr
_nfs_bioread
_nfs_read
_vn_rdwr
_check_exec
_sys_execve
_syscall
_trap0

This was using 1.4.2_ALPHA of 20000127 to build 1.4.2 (20000225 actually).

Todd Whitesel
toddpw @ best.com