I will as soon as I manage to do a remote upgrade of /dev/hda2 from a given new CDROM.iso.
Currently I am able to do it from console without problem, just need to try that from a remote ssh. This way upgrade from ALIX will not require any more opening of the box, unscrewing of the board to access the CF card.
Note that from a serial connection it is already manageable using a USB key holding the ISO image.
Now since we are at it, any reason other than ease that make you choose Zisofs rather than squashfs.
Furthermore what do you thing of setting the size of the second partition to big enough value such as 200 MB so that we will not have any issue for upgrade?