DVD + weird log messages

[Bryan Cassidy]

I get these in my log (messages) when I play DVDs. The movie plays fine, without any problem what so ever. 

Nov  9 20:16:46 bellsouth /kernel: acd0: READ_DVD_STRUCTURE - ILLEGAL
REQUEST asc=0x30 ascq=0x02 error=0x04
Nov  9 20:17:17 bellsouth /kernel: acd0: READ_DVD_STRUCTURE - ILLEGAL
REQUEST asc=0x30 ascq=0x02 error=0x04
Nov  9 20:18:07 bellsouth /kernel: acd0: READ_DVD_STRUCTURE - ILLEGAL
REQUEST asc=0x30 ascq=0x02 error=0x04
Nov  9 20:20:30 bellsouth /kernel: acd0: REPORT_KEY - ILLEGAL REQUEST
asc=0x6f ascq=0x04 error=0x04
Nov  9 20:20:30 bellsouth /kernel: acd0: REPORT_KEY - ILLEGAL REQUEST
asc=0x2c ascq=0x00 error=0x04
Nov  9 20:20:56 bellsouth /kernel: acd0: REPORT_KEY - ILLEGAL REQUEST
asc=0x6f ascq=0x04 error=0x04
Nov  9 20:20:56 bellsouth /kernel: acd0: REPORT_KEY - ILLEGAL REQUEST
asc=0x2c ascq=0x00 error=0x04
Nov  9 20:22:56 bellsouth /kernel: acd0: REPORT_KEY - ILLEGAL REQUEST
asc=0x6f ascq=0x04 error=0x04
Nov  9 20:22:56 bellsouth /kernel: acd0: REPORT_KEY - ILLEGAL REQUEST
asc=0x2c ascq=0x00 error=0x04