I had similar problems with the TS-L632M a few months back. I got onto the 
Samsung ODD support and we concluded that it wasn't burning some media 
properly and then was tripping up during Nero's verification. XP is set to 
put the interface into PIO mode after a few timeout errors. The TS-L632M was 
replaced and the new one has given no problems.

The easiest way (at least for the standard Intel controller) to clear the 
PIO mode problem is to go into Device Manager, open up the IDE ATA/ATAPI 
controller, check which IDE channel is in PIO mode then uninstall it. Then 
go to the top of the list in Device Manager, right click and select Detect 
new hardware.

Or you can try using (at your own risk) the attached ResetDMA script I was 
sent by Samsung support.

http://forum.notebookreview.com/showthread.php?t=131824

"vidmantas" <netikras@n.lt> wrote in message 
news:fvfmlf$apd$1@trimpas.omnitel.net...
> kai nero spaudziu get system info, ten matau kad cd rom'as yra secondary 
> chanel ir ten matosi kad DMA off, nors per device manager matau kad 
> nustatyta DMA if available. Dar event viewer meta warning per application 
> kad kazkas su FLCDLOCK