I have had the same issue where I was getting "i/o error, device sr0" and then give some random block numbers.
I have burned and re-burned dvd's, tried installing from a USB flash drive, downloading a different version and all gave me the same results.
I finally on a whim one time hit F6 at the install menu for more options. I think I hit it twice and a menu popped up. I selected the option for 'noacpi', hit enter, escape, enter and the install worked.
Hope this resolution helps someone else resolve their installation problems.