the same problem occurs. it seems that when i flash the firmware to anything but the nec 2.19 original firmware, the drive will stop reading and writing after ripping and burning a couple of dvds. to be more specific, it works fine reading for the first 5-6 dvds, but after that my speeds rip at 1600kbs when it is suppose to be ripping at 5kbs. i open and close the drive a couple of times and it works, but this is not always the case. as for burning, it will burn 12-13 dvds, but after that i get write errors from alcohol and nero. whenever i burn, it says something like an SCSI error and the program finalizes the disc. i have reflashed to the original firmware, but i would like to continue using the hacked ones. if anyone knows why im having this problem please help.