So, I just did an upgrade from 2.6.26-12 to 2.6.26-19lenny1 without any problems. Pierre's problem was the sda->sdb change, a known problem which will be fixed with the squeeze installer. I also haven't heard from anyone else about problems with the upgrade, so I doubt the new kernel has a problem. Xan, have you tried connecting your disks to another machine and running fsck over the partitions? -- Martin Michlmayr http://www.cyrius.com/