beneq wrote:1. why the disc burn so slow (cds record speed were 32 )
(my pc: duron 750, 128mb memory )
Probably a DMA issue:http://www.cdrlabs.com/phpBB/viewtopic.php?t=7625
Another possibility is you were using low-speed, poorer quality media.
beneq wrote:2. Schould i return it and change it to real cendyne Lightning IV??
First, the Benq is already as "real" a Cendyne as any other, since Cendyne simply rebadges drives manufactured by others. You just happened to get a Benq in your box rather than a LiteOn. But what you really want to know is should you exchange it for a LiteOn. To that I personally say yes, since I have had bad experiences with Benq quality and don't like the brand anymore. Unfortunately for you, exchanging your Cendyne for another at the store where you bought it is not likely to get you a LiteOn. It is more likely that all the Cendyne units in that store came from the same batch, and thus would all be Benqs.