Strange messages detection DVD-ROM

Hi,

On fairly recent currents, I'm seeing some strage messages detecting my 
DVD-ROM:

acd0: CDRW <CR-48XCTE> at ata0-master UDMA33
acd1: WARNING - MODE_SENSE_BIG read data overrun 34>18
acd1: DVDROM <Pioneer DVD-ROM ATAPIModel DVD-104S 0123> at ata0-slave UDMA33
afd0: REMOVABLE <LS-120 VER5 00 UHD Floppy> at ata1-slave WDMA1
ad4: 39266MB <IC35L040AVVN07-0> [79780/16/63] at ata2-master UDMA100
acd1: FAILURE - TEST_UNIT_READY ABORTED COMMAND asc=0x4b ascq=0x00 error=0
ad6: 29311MB <Maxtor 33073U4> [59554/16/63] at ata3-master UDMA66

It doesn't seem to do any harm, since its still possible to use it fine, but i 
guess ti shouldn't be doing it? My CDRW (on the same cable, IIRC) doesn't do 
it.

-- 
Mark

'If it compiles, ship it'