I downloaded the daily image of 32bit xubuntu 14.04 yesterday and put it on a multiOS USB flash drive which I have used for some time and which I made following the info at http://ubuntuforums.org/showthread.php?t=1288604.
On my Netbook with MBR BIOS it boots to a lightdm login screen (I presume it's lightdm) and asks for a user and password. I enter xubuntu for user, leave password blank and login to the live session with no problem.
On my UEFI desktop machine I try to do the same at the login screen but the the user xubuntu and blank password just returns me to lightdm with a wrong password error message.
Actually on both it boots to a Bangladesh language desktop, but that can be changed to English_GB at login screen. I mention that for info only.
What could be going on here? Why will it boot OK to live session on one machine but not the other?
As a general comment, however, it looks very good at the moment on the netbook, and pretty fast as well