I'm writing DVD-R's using Instant VOB and my Sony dw-u10, and I've tried a number of brands of disk, but 50% of the time, the post-writing validation flags up a writing error, saying that 'buffer xxxxx' was not found. At first I thought it was down to a didgy batch of the datawrite-RED DVD's, but I've been through the same with a couple of other brands now. I want to continue using Instant VOB, as my DVD player only seems to like disks written using that program
Should I pay much attention to the validation? Any ideas what's happening?

thanks