Just bought a LaCie Dual Layer D2 burner and did a test last night. Burnt and verified data successfully. Then tried the newly burnt DVD in my G5 with super drive and it wasn't recognised. Popped it in my TI Powerbook 800 and worked fine. Then my trusty old G4 400, and again worked fine. The media was Verbatim DVD+R DL. Am I missing something obvious here. I thought the older machines might have trouble recognising the DL technology, but I didn't think my new G5 would be the odd one out. PS I hope I've posted this query in the right area.