Some process thinks my HDD is CD drive

[Joya Luevano Mayonga <nle-ce0h@myamail.com>]

Hi, 
I always get warnings like "Device: /dev/hda, ATA error count 
increased from 7110 to 7111" . I investigated this issue some 
time ago and Bruce Allen pointed that some process thinks that
 this device might be a DVD or CD player or recorder and is 
polling the device using ATAPI rather than ATA commands and 
that generates this error.
(http://sourceforge.net/mailarchive/message.php?msg_name=Pine.LNX.4.63.0710261451120.4380%40trinity.phys.uwm.edu)

Which process/service can cause this situation? 
I use Etch.

Thanks