Serial console prob on amd64

[Freminlins]

Hello,

I have a dual amd64 machine on which serial console is not working
properly. I've configured dozens of Intel machines without a problem.

I have set up boot.config and /etc/ttys. If I boot the machine some
data is printed to console. Rather than paste the whole lot here,
here's the last few lines:

Timecounters tick every 1.000 msec
ad0: 78167MB <Maxtor 6Y080L0 YAR41BW0> at ata0-master UDMA133
ad1: 78167MB <Maxtor 6Y080L0 YAR41BW0> at ata0-slave UDMA133
acd0: CDROM <SR244W/T01A> at ata1-master UDMA33
SMP: AP CPU #1 Launched!
Trying to mount root from ufs:/dev/ad0s1a
bge0: link state changed to DOWN
bge1: link state changed to DOWN

And that's it. Serial console is frozen, but the machine boots up and runs fine.

Any suggestions?

Thanks,
Frem.