i have the same problem on Ubuntu 9.10 simulation runs ok, but real job does not. kern.log: [code] . . . Mar 15 21:06:12 dosbook kernel: [ 2833.388464] cdrom: This disc doesn't have any tracks I recognize! Mar 15 21:06:12 dosbook kernel: [ 2833.400561] sr 3:0:0:0: [sr0] unaligned transfer Mar 15 21:06:12 dosbook kernel: [ 2833.400723] sr 3:0:0:0: [sr0] unaligned transfer Mar 15 21:06:12 dosbook kernel: [ 2833.400868] sr 3:0:0:0: [sr0] unaligned transfer Mar 15 21:06:12 dosbook kernel: [ 2833.400905] sr 3:0:0:0: [sr0] unaligned transfer Mar 15 21:06:12 dosbook kernel: [ 2833.403455] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Mar 15 21:06:12 dosbook kernel: [ 2833.403466] sr 3:0:0:0: [sr0] Sense Key : Illegal Request [current] Mar 15 21:06:12 dosbook kernel: [ 2833.403477] sr 3:0:0:0: [sr0] Add. Sense: Logical block address out of range Mar 15 21:06:12 dosbook kernel: [ 2833.403488] end_request: I/O error, dev sr0, sector 0 Mar 15 21:06:12 dosbook kernel: [ 2833.405414] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Mar 15 21:06:12 dosbook kernel: [ 2833.405423] sr 3:0:0:0: [sr0] Sense Key : Illegal Request [current] Mar 15 21:06:12 dosbook kernel: [ 2833.405432] sr 3:0:0:0: [sr0] Add. Sense: Logical block address out of range Mar 15 21:06:12 dosbook kernel: [ 2833.405442] end_request: I/O error, dev sr0, sector 0 Mar 15 21:06:12 dosbook kernel: [ 2833.413203] sr 3:0:0:0: [sr0] unaligned transfer Mar 15 21:06:12 dosbook kernel: [ 2833.413238] sr 3:0:0:0: [sr0] unaligned transfer Mar 15 21:06:12 dosbook kernel: [ 2833.414490] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Mar 15 21:06:12 dosbook kernel: [ 2833.414500] sr 3:0:0:0: [sr0] Sense Key : Illegal Request [current] Mar 15 21:06:12 dosbook kernel: [ 2833.414510] sr 3:0:0:0: [sr0] Add. Sense: Logical block address out of range Mar 15 21:06:12 dosbook kernel: [ 2833.414519] end_request: I/O error, dev sr0, sector 0 Mar 15 21:06:12 dosbook kernel: [ 2833.425005] sr 3:0:0:0: [sr0] unaligned transfer Mar 15 21:06:12 dosbook kernel: [ 2833.425042] sr 3:0:0:0: [sr0] unaligned transfer Mar 15 21:06:12 dosbook kernel: [ 2833.427756] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Mar 15 21:06:12 dosbook kernel: [ 2833.427767] sr 3:0:0:0: [sr0] Sense Key : Illegal Request [current] Mar 15 21:06:12 dosbook kernel: [ 2833.427779] sr 3:0:0:0: [sr0] Add. Sense: Logical block address out of range Mar 15 21:06:12 dosbook kernel: [ 2833.427790] end_request: I/O error, dev sr0, sector 0 [/code] brasero-session.log fractions: [code] ... BraseroWodim got varg: wodim -v dev=/dev/sr0 speed=24 driveropts=burnfree -dao fs=27m -swab -audio -useinfo -text ... BraseroWodim stderr: wodim: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits.scsidev: '/dev/sr0' BraseroWodim called brasero_job_get_flags BraseroWodim stderr: devname: '/dev/sr0' BraseroWodim called brasero_job_get_flags BraseroWodim stderr: scsibus: -2 target: -2 lun: -2 BraseroWodim called brasero_job_get_flags BraseroWodim stderr: Linux sg driver version: 3.5.27 BraseroWodim called brasero_job_get_flags BraseroWodim stderr: Wodim version: 1.1.9 BraseroWodim called brasero_job_get_flags BraseroWodim stderr: SCSI buffer size: 64512 BraseroWodim called brasero_job_get_flags BraseroWodim stderr: Beginning DMA speed test. Set CDR_NODMATEST environment variable if device BraseroWodim called brasero_job_get_flags BraseroWodim stderr: communication breaks or freezes immediately after that. BraseroWodim called brasero_job_get_flags BraseroWodim stdout: TOC Type: 0 = CD-DA BraseroWodim stdout: Driveropts: 'burnfree' BraseroWodim stdout: Device type : Removable CD-ROM BraseroWodim stdout: Version : 5 BraseroWodim stdout: Response Format: 2 BraseroWodim stdout: Capabilities : BraseroWodim stdout: Vendor_info : 'MATSHITA' BraseroWodim stdout: Identification : 'UJDA775 DVD/CDRW' BraseroWodim stdout: Revision : '1.00' BraseroWodim stdout: Device seems to be: Generic mmc2 DVD-ROM. BraseroWodim stdout: Current: 0x0009 (CD-R) BraseroWodim stdout: Profile: 0x0010 (DVD-ROM) BraseroWodim stdout: Profile: 0x000A (CD-RW) BraseroWodim stdout: Profile: 0x0009 (CD-R) (current) BraseroWodim stdout: Profile: 0x0008 (CD-ROM) BraseroWodim stdout: Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr). BraseroWodim stdout: Driver flags : MMC-3 SWABAUDIO BURNFREE BraseroWodim stdout: Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R96R BraseroWodim stdout: Drive buf size : 1433600 = 1400 KB BraseroWodim stdout: FIFO size : 28311552 = 27648 KB BraseroWodim stderr: Speed set to 4234 KB/s ... BraseroWodim called brasero_job_get_action BraseroWodim called brasero_job_set_current_action BraseroWodim stdout: Track 03: 47 of 63 MB written (fifo 100%) [buf 99%] 8.2x. BraseroWodim called brasero_job_get_action BraseroWodim called brasero_job_set_current_action BraseroWodim stderr: Errno: 5 (Input/output error), write_g1 scsi sendcmd: no error BraseroWodim called brasero_job_get_flags BraseroWodim stderr: CDB: 2A 00 00 01 C9 E3 00 00 1B 00 BraseroWodim called brasero_job_get_flags BraseroWodim stderr: status: 0x2 (CHECK CONDITION) BraseroWodim called brasero_job_get_flags BraseroWodim stderr: Sense Bytes: 71 00 04 00 00 00 00 0A 00 00 00 00 09 00 00 00 BraseroWodim called brasero_job_get_flags BraseroWodim stderr: Sense Key: 0x4 Hardware Error, deferred error, Segment 0 BraseroWodim called brasero_job_get_flags BraseroWodim stderr: Sense Code: 0x09 Qual 0x00 (track following error) Fru 0x0 BraseroWodim called brasero_job_get_flags BraseroWodim stderr: Sense flags: Blk 0 (not valid) BraseroWodim called brasero_job_get_flags BraseroWodim stderr: cmd finished after 0.019s timeout 200s BraseroWodim called brasero_job_get_flags BraseroWodim stderr: wodim: A write error occured. BraseroWodim called brasero_job_get_flags BraseroWodim stderr: wodim: Please properly read the error message above. BraseroWodim called brasero_job_get_flags BraseroWodim stdout: Track 03: 48 of 63 MB written (fifo 100%) [buf 99%] 8.5x. ... [/code] I hope this could help.