Reading between the lines I think that you may have burned the ISO incorrectly.
It is vital, due to the high compression technology we use, to burn DAO.
It wouldn't be if you quit using "high compression technology", which is a backward step in installation technology.
Neither of my burners, xfburn or Brazero, allow that option. Futhermore, the lowest possible selection of speed is 16x.
I did this on both Xubuntu and Mint Debian XFCE..
http://manual.aptosid.com/en/cd-dl-burn ... ad-aptosid