Comment 66 for bug 266951

I'm experiencing the same problem in karmic

uname 2.6.31-15-generic

If I burn an iso image burnig looks OK but when I insert the burned CD dmesg shows these errors:
[ 1070.463949] sr 5:0:0:0: [sr0] Unhandled sense code
[ 1070.463955] sr 5:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 1070.463960] sr 5:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 1070.463967] Info fld=0x5604c
[ 1070.463969] sr 5:0:0:0: [sr0] Add. Sense: L-EC uncorrectable error
[ 1070.463977] end_request: I/O error, dev sr0, sector 1409328
[ 1070.463984] Buffer I/O error on device sr0, logical block 352332
[ 1075.533057] sr 5:0:0:0: [sr0] Unhandled sense code
[ 1075.533063] sr 5:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 1075.533068] sr 5:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 1075.533075] Info fld=0x5604c
[ 1075.533078] sr 5:0:0:0: [sr0] Add. Sense: L-EC uncorrectable error
[ 1075.533086] end_request: I/O error, dev sr0, sector 1409328
[ 1075.533094] Buffer I/O error on device sr0, logical block 352332
[ 1080.678989] sr 5:0:0:0: [sr0] Unhandled sense code
[ 1080.678994] sr 5:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 1080.678999] sr 5:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 1080.679007] Info fld=0x5604c
[ 1080.679009] sr 5:0:0:0: [sr0] Add. Sense: L-EC uncorrectable error
[ 1080.679017] end_request: I/O error, dev sr0, sector 1409328
[ 1080.679024] Buffer I/O error on device sr0, logical block 352332
[ 1085.747930] sr 5:0:0:0: [sr0] Unhandled sense code
[ 1085.747936] sr 5:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 1085.747941] sr 5:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 1085.747948] Info fld=0x5604c
[ 1085.747951] sr 5:0:0:0: [sr0] Add. Sense: L-EC uncorrectable error
[ 1085.747958] end_request: I/O error, dev sr0, sector 1409328
[ 1085.747964] Buffer I/O error on device sr0, logical block 352332
[ 1088.084023] UDF-fs: No VRS found
[ 1088.084028] UDF-fs: No partition found (1)
[ 1088.171269] ISO 9660 Extensions: Microsoft Joliet Level 3
[ 1088.217187] ISO 9660 Extensions: RRIP_1991A

If i burn the same image on the same medium (cd-RW) in windows no errors occours.
This issue didn't occours in 8.04, 8.10 and 9.04.