I have an annoying problem with my brand new 17" Powerbook. I suspect it's me, not my machine, but I'm sure you folks will tell me anyway. Why does my Superdrive (Matshita) only write at x1 on x4 media. I only use branded Verbatim x4 media (I'm not the one who pays the bills) I thought that apple had sorted out all those speed issues. I'm using toast 5.2. Does anyone have any suggestions?