Bad power down in 5.0, missing xl0

[Chris Neustrup]

I've got a Thinkpad T20, running 5.0 early release.  It is a dual boot 
with Win98 on the other partition.  It seemed pretty strong, but I have 
some problems:

1. The power down sequence seems to hose some part of the bios or 
whatever.  When I shutdown and then reboot to Win98 it thinks it has 
been taken down and corrupted, so it wants to come back up in SAFE mode.

2. The /dev directory no longer has an xl0 device for the mini-PCI 
ethernet on the motherboard.  Completely disappeared.  Where did it go?

tia, CHris