Yeah! fixed today by one or more of linux-image-2.6.20-2-generic / mdadm (2.5.6-7ubuntu1)
-- [feisty] non-working initramfs: failed to activate RAID https://launchpad.net/bugs/75052 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
