When I installed wattOS R10 to my Dell Inspiron, I was not prompted for password in the live usb. I used UnetBootin to create live usb from my wattOS R9 on my main pc. I set it up for autologin (when installing) and was prompted for password the first time I rebooted into new system. After that autologin worked fine.
BTW blaze, I couldn't upgrade my main pc because of my ATI Radeon HD5450 graphics card. Apparently the (forced on us) open source drivers do not work with some graphic cards like mine. With no option for fglrx, a lot of gamers are dissapointed and cannot upgrade to the new version.