Comment 1 for bug 283658

Actually, might have been too hasty about this, seems to be related to the CD (which is not copy protected as far as I can tell) :

[ 918.176129] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 918.176155] ata4.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 918.176158] cdb 1b 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00
[ 918.176160] res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
[ 918.176168] ata4.00: status: { DRDY }
[ 918.456100] ata4: soft resetting link
[ 918.636580] ata4.00: configured for UDMA/33
[ 918.636631] ata4: EH complete
[ 948.405358] end_request: I/O error, dev sr0, sector 0