HHey sctech,
as i mentioned in this post:
http://www.pokerth.net/component/option,com_joomlaboard/Itemid,58/func,view/id,1329/catid,13/
the boost libraries have to sit either in the /usr/include or as a symlink in the source directory of pokerth.
i have also ubuntu on my desktop-pc, however always used a debian system for compiling pokrth (wich are verry similar from architecture, ubuntu is based on debian)
maybe try it the way i described it in my post, if you encounter error i will try to reproduce them on my desktop and document them also...
skub