Comment 2 for bug 291287

It looks like you have a bad CD burn or faulty hardware. I suggest burning a new copy of the CD at a slower speed, run the CD integrity check off the CD boot menu, and then try the install again.

Oct 30 22:19:31 ubuntu kernel: [ 707.024150] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
Oct 30 22:19:31 ubuntu kernel: [ 707.024161] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
Oct 30 22:19:31 ubuntu kernel: [ 707.024166] Info fld=0x4ef1
Oct 30 22:19:31 ubuntu kernel: [ 707.024168] sr 0:0:0:0: [sr0] Add. Sense: No seek complete
Oct 30 22:19:31 ubuntu kernel: [ 707.024173] end_request: I/O error, dev sr0, sector 80836
Oct 30 22:19:31 ubuntu kernel: [ 707.024179] Buffer I/O error on device sr0, logical block 20209
Oct 30 22:19:35 ubuntu kernel: [ 711.861809] SQUASHFS error: sb_bread failed reading block 0x94e8
Oct 30 22:19:35 ubuntu kernel: [ 711.861821] SQUASHFS error: Unable to read fragment cache block [2535643]
Oct 30 22:19:35 ubuntu kernel: [ 711.861825] SQUASHFS error: Unable to read page, block 2535643, size 4a68