When you say it reads dvd-9 disks very slowly, what times are we talking about, 15-20 minutes?
If so, then you HP is probably rip-locked.
My nd-1100a with rip-lock reads a dvd-9 in the time mentioned above. DVDdecrypter states it has an average reading speed of 3X
With the riplock removed I get a average read speed of 7X with DVDdecrypter and it finishes reading within 8 minutes most of the time (also depends on disc surface quality)
Reading your reaction I guess youâ€™ve never flashed your firmware before.
Itâ€™s not that big a deal. Sure there is always the risk of a bad flash, but if you flash within the DOS environment risks are minimal. Just be sure to backup your old firmware before you overwrite it with the new one. The nd-1300a firmware I mentioned is a great firmware, you can try it to see if you like it. It probably will double your reading speeds, but its up to you to decide if itâ€™s worth the hustle.