I had some issues mounting my RAID array in that an error was thrown saying that an ext3 filesystem could not be found on /dev/md0.
So, maybe stupidly, i ran mkfs -t ext3 /dev/md0 - has this destroyed the data on the disks? I can't seem to find it anywhere that's for sure....but wondered if i dissassembled the array i might be able to retrieve the data from one of the disks (RAID 1 by the way)