gmirror panic on smp unloaded but not nextboot

[pyotr at pisem.net]

Hello everyone,

I tried the 6.3 to 7.0 upgrade with cvsup & Co. i already had the 
gmirror device functioning properly
after first mergemaster -p i did boot the 7.0 with nextboot to try. ok, 
the second mergemaster passed smooth and i tried to boot with old kernel 
cause forgot about the nextboot last time.
ok, on the console i saw the error about wrong gmirror labels version. 
So to boot the built 7.0 kernel i used the oot loader commands:
===
unload ( means to unload ALL kernel AND modules, the 6.3 stuff gets 
completely unloaded )
load /boot/kernel/kernel.70
boot -s
===

And... see kernel trap 1 right after ata0 and ata1 detection!
Sorry no debug information to attach cause it's remote kvm system...
More about the hardware: celeron 1.6 dual / 1G / atapi 2x80.
Should i submit a PR?