Hi, I confirm this problem. I have received precisely same error after upgrade to version 1.98-1 (I do not remember from what version).
At grub-pc configure there were errors (grub-probe). Then I (by grup-pc recommendation) have executed update-grub and rebooted the system. I have restored system booting only by downgrade to version 1.98~20100115-1 /boot mount md0 : active raid1 sdb1[1] sda1[0] 96256 blocks [2/2] [UU] -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org