Comment 39 for bug 360460

So it seems to be an hardware bug.

To confirm this hypothesis with my case, the installation disc I used was a Verbatim CD-R on a Sony Optiarc AD-7170A with firmware version 1.02 while 1.05 is available here
http://www.sony-optiarc.eu/supportservice/downloads/archive/downloadsarchive/dvddrivesdesktoppcs/ad7170a.html
with the following from the release notes :
«Media compatibility improved»

But then, one question remains:
Why is this bug triggered only by the Alternate disc for quite some time now and apparently Debian 5.1 DVD installation ?
(there must be some aspects of the installer that triggers the bug)
and then, could it be a way to circumvent/mitigate this bug by changing the drive parameters with hdparm and special command to slow down speed, reset the drive or maybe disable cache/DMA/PIO/prefetching/... ?