I have an encrypted filesystem on one of my home Desktops and I've tried several times to unplug the power supply cable when the OS was still running in KDE (without proper shutdown). I had no problems with this. Although it is not a Laptop I think that the scenario is similar. One time it happened, that on boot it said that the filesystem on cryptroot is not clean but it completed the normal disk check and booted up successfully.
Last edited by hua; 05-11-2011 at 10:18 AM.