On Tue, Feb 12, 2008 at 21:18:54 +0200, Peter Lauri <peterlauri@xxxxxxxxx> wrote: > How risky is it to install F9 alpha as only system on my laptop that > needs to work without problems tomorrow in the office? :) It eats babies. No, you don't want to do that. Given those circimstances I wouldn't play with encryption at all today. Wait until you have time to restore the machine to its previous state if things go poorly and have some noncritical time to play with it even if things do appear to go smoothly.