I am trying to burn a DVD but get errors. I am on a Late 2007 Macbook using Leopard. When I try to burn via iPhoto, I get this error: The burn to mathsita dvd-r-uj857e drive failed. the device failed to respond properly, unable to recover or retry. When I try to burn via Finder, I get this error: Burning the disc failed b/c communication to the disc drive failed. Error code 0x8002022 Any suggestions to fix this problem?