Comment 267 for bug 930447

'...Why?? PAE Kernel!! I had to install 12.04, install fake-pae and the make 3 (THREE) dist upgrades! (after days of research). Why force users that have a PAE capable cpu (unlikely not advertised) to make tricks and 3-4-5 etc distribution upgrades just to be able to install the latest distribution that could also run with no problems at all? ...'

If you had searched a little bit more, or asked at the Ubuntu Forums, maybe you had found

https://help.ubuntu.com/community/Lubuntu-fake-PAE

and you had been able to install Lubuntu 13.10 directly without all those upgrading steps.