yea i have a TEAC DV-W58E burner and after like 3 months of burnin great at 4x, it died down to 0.8X. I got a new one from Dell and i have the same issue, but i didnt even get to use the new one to burn at 4, its been on that 0.8X status that i been dying to know if theres any thing i can do, and i burn with settings set to 4x, and 2x, to no avail