On Mon, 17 Jul 2006, Christian Pernegger wrote:

The problem seems to affect only arrays that are started via an
initrd, even if they do not have the root filesystem on them.
That's all arrays if they're either managed by EVMS or the
ramdisk-creator is initramfs-tools. For yaird-generated initrds only
the array with root on it is affected.

with lvm you have to stop lvm before you can stop the arrays... i wouldn't 
be surprised if evms has the same issue... of course this *should* happen 
cleanly on shutdown assuming evms is also being shutdown... but maybe that 
gives you something to look for.

-dean