I've been buring movies on Sony-RW650 format, and it has worked well thus far. However, I'm starting to find that movies burned about 2 months ago will no longer play in my panasonic RV20. Other formats even older seem to work, but they are not used often. These were movies that suffered the most use, but there are no scrathes or anything.

THe problem discs are all the same sony one. It might be my DVD player, but as I said other formats are still fine... Any thoughts?

PS. the problem discs are 'more or less' readable on a PC, although it does seem glitchy. Sometimes spontaneously the discs will play flawlessly on the DVD player, no glitches at all.

I know, this is a rather strange problem. Any ideas and help would be really appreciated.