Thank you for finding out that the mini.iso cloned to USB works now
A dd-cloned USB pendrive of the version 12.04 of mini.iso booted but did not work all the way a couple of weeks ago (and probably still does not work). I was encouraged by your post and downloaded mini.iso version 13.04 (32-bits), cloned it to a USB pendrive with dd and installed a working Lubuntu minimal system
I will edit my tutorial to encourage people to clone the mini.iso (using a shell-script to make it safe).
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