today I upgraded my server from Feisty to Gutsy and than again from Gutsy to Hardy.
Problems? Only one. dmesg was spamed with the following:
device-mapper: ioctl: error adding target to table
device-mapper: table: 254:1: linear: dm-linear: Device lookup failed
The bug is known in launchpad: Launchpad-Link
To solve this, simply remove evms: sudo apt-get remove evms