I bought a Lacie External Lightscribe DVD burner and I have been backing up files to DVD's. It's been working great then all of a sudden I get 2 error messages on every single DVD I put into my burner. The 1st error says 'Interface Error: 5 The connection is not stable.' and C'ouldn't complete the last command because of a Mac OS Error. Result Code = -50'. I am on Mac OS 10.4 and my lacie dvd drive is connecting by firewire directly into my tower. Anyone know what's wrong?