Since this is one of those things that are going to get asked over and over again I wrote a few notes (actually just slightly edited Seth's yum upgrade hints :) on howto upgrade from FC1 to FC2 using APT: http://laiskiainen.org/apt/misc/fc1-fc2-apt-hints.txt I haven't tested things like full ATrpms + freshrpms + Dag etc upgrades *at all* and not going to spend huge amounts of time debugging such upgrades either but will happily add notes to the guide of any specific issues+workarounds people find. Oh and once more: if you use LVM on your system, don't even think about using apt or yum for the upgrade! - Panu -