GEOM vinum and SMP (AMD64)

[Nyaano]

Hi,

I've just tried out FreeBSD 6.2-BETA2 (AMD64) on a Core2Duo E6300.
I installed the SMP kernel without any problem, made a gvinum 
configuration and created a RAID5 volume.
I can mount it without any problems, and I added geom_vinum_load="YES" 
in /boot/loader.conf and the appropriate line in /etc/fstab after 
creating a filesystem on the volume.
After that, I do a simple shutdown -r now because I want to make sure 
that everything starts up the way it should.
When the system comes to the point where it's going to mount the RAID5 
volume, it complains about the superblock and says it's corrupt.

With exactly the same configuration, but with the GENERIC kernel, 
everything works without any problems.

Before I spend more time on trying to get this working with SMP, I'd 
like to know if this is a known problem, and if it's not, what 
information is needed from me in order to track down what the problem is.

Thank you,
Nyaano