cdrecord problems

I haven't burnt a CD on my laptop for a while, but when I fired up Arson to burn one today, I got the following errors :

cdrecord: No write mode specified. cdrecord: Asuming -tao mode. cdrecord: Future versions of cdrecord may have different drive dependent defaults. cdrecord: Continuing in 5 seconds... cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler cdrecord: Permission denied. WARNING: Cannot set priority using setpriority(). cdrecord: WARNING: This causes a high risk for buffer underruns. scsidev: '-dev-hdc' devname: '-dev-hdc' scsibus: -2 target: -2 lun: -2 Warning: Open by 'devname' is unintentional and not supported. Linux sg driver version: 3.5.27 Error: Cannot gain SYSRAWIO capability.Is cdrecord installed SUID root? cdrecord: Warning: using inofficial version of libscg (debian-0.8debian2 Schilling'). SCSI buffer size: 64512 Schilling NOTE: this version of cdrecord is an inofficial (modified) release of cdrecord and thus may have bugs that are not present in the original version. Please send bug reports and support requests to The original author should not be bothered with problems of this version. TOC Type: 1 = CD-ROM Using libscg version 'debian-0.8debian2'. Driveropts: 'burnproof' atapi: 1 Device type : Removable CD-ROM Version : 0 Response Format: 2 Capabilities : Vendorinfo : 'Slimtype' Identifikation : 'COMBO LSC-24082K' Revision : 'JKU5' Device seems to be: Generic mmc2 DVD-ROM. Current: 0x0009 Profile: 0x0010 Profile: 0x000A Profile: 0x0009 (current) Profile: 0x0008 Profile: 0x0002 Using generic SCSI-3-mmc CD-R-CD-RW driver (mmccdr). Driver flags : MMC-3 SWABAUDIO BURNFREE FORCESPEED Supported modes: TAO PACKET SAO SAO-R96P SAO-R96R RAW-R16 RAW-R96P RAW-R96R Drive buf size : 1422080 = 1388 KB FIFO size : 4194304 = 4096 KB cdrecord: Operation not permitted. Cannot send SCSI cmd via ioctl Track 01: data 92 MB Total size: 105 MB (10:29.38) = 47204 sectors Lout start: 106 MB (10:31-29) = 47204 sectors

What is this SCSI error ?