> > Seeing that this is the second device that has shown these symptoms, I
> > would consider it *extremely unlikely* that this is the problem.
>
> So do I.


Me also.

>
> Here is what should have been done to diagnose a burner problem:
>
>  Check for software problems. These can be caused by hardware problems
>  and can at times be difficult to distinguish from hardware problems.
>
>  Check syslog - this indicates a hardware problem.
>  Possibilities:
>
>    Media I/O errors cause IDE busses to lock up. Check with different
>    media.
>
>    Defective drive - connect to another computer
>
>    Defective cable - replace cable, preferably with an unused one
>
>    Defective motherboard - connect a different drive
>
>    Two pieces of hardware being fine by themselves, but mutually
>    incompatible.
>
>  Make sure you connect only one drive per cable for testing.
>
>  In theory, it could be a kernel driver problem. Test with OtherOS if
>  possible.

Very good description of what should be done Volker.  I agree entirely.

>  At this point, the defective piece of hardware should be located, and
>  the tests shouldn't have taken long. Now's the time to go back to the
>  shop. I wouldn't request a replacement drive unless I had at least
>  somewhat excluded other hardware. If the parts were purchased at the
>  same time to make a system, one can argue it's the shop's problem to
>  sort the lot.
>

At the moment from following the thread I do not believe that we have
entirely eliminated a chipset/drive interaction and before returning
this to the shop I would probably attempt the hdparm line.

hdparm -d 1 -X32 /dev/hdc

as taken from http://www.dtek.chalmers.se/groups/dvd/faq.shtml
question 44.

Just in case.

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