My brand new Plextor 716 S/W does it all drive did the same thing and I am still fighting with Plextor.
It's your CDROM, nothing to worry about. I don't like Sony but I have two R/W drives that Sony makes that have rocked.
No BS drives that do what you tell them too. Do not use their software if you decide on this brand.
ASUS makes a decent drive also but I see some extra pixel'sation when burning movies.
I am sad to say go with the older Sony drives. The reason is that Sony sucks in much of what they do, but I have to admit their drives are good.
I must reiterate that the software from Sony should not be loaded.
All that I say is from experience dealing with these products and is subject to opinion.
Hope that helps,
Your Hardware Guide.