As it's not caused by kernel raid autodetection I guess this probably belongs to package mdadm.
Have you tested if the 9.10-10.04 update works for raid systems this time? You can see quite some raid bugs filed and also https://wiki.ubuntu.com/ReliableRaid ** Package changed: linux (Ubuntu Lucid) => mdadm (Ubuntu Lucid) -- booting out of sync RAID1 array fails with ext3 (comes up as already in sync) https://bugs.launchpad.net/bugs/557429 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs