My Plextor 716UF died on me a few hours ago. 2nd one in less than a year. Anyways, back in november of 05 I RMA'd my original unit, with a manufacturing date of March 05. When I got the new unit, it had a new manufacturing date, AUG 2005. Since I didnt keep the invoice, this would be the only way for Plextor to verify that the unit is still under warranty. However, I'm not sure if they would still validate it. Does anyone know of Plextor keeping track of original manufacturing dates yet shipping units with new manufacturing labels?