Hi guys, I need a big help to write 4x on princo media by Sony U14A writer. It doesnt write at 4x but software shows it is writing on 4x. it tooks 35min to write a complete 4gb movie. I change the firmware DW-U14A to 510 sony writer with firmwire 1.0c. it doesnt help anything. Please does sombody knows good solution to write at 4x speed by Sony 14awriter. Thanks in advance.