Some special DVD drivers like the Toshiba SD-M1512 will be drop to 2x speed when burning CSS encrypted discs. If this happens, you can’t do anything but sit and watching. If your time is tight, and you really wanna do some thing instead of the aspeasement policy, then you can try to enable Ultra DMA in your BIOS and Windows (Control Panel -> System -> Device Manager, in W2k/XP the setting is in the IDE/ATAPI controller settings, in W9x/ME it’s part of the DVD drive settings).
If that doesn’t help try to reconnect your IDE devices differently. The DVD-ROM should be master and if possible have its own IDE channel.
Hope this would help in some way. Good luck! (by: DVD Cloner Pro.)