I have the pioneer DVR-106 DVD drive and it has some problems. it will write the 4x ritek dvd-r's that i have no prob. it just wont read them after that. if you open windows explorer and watch the drive icon when you insert a dvd it changes from "DVD-RW" to the default "CD Drive". you can click on cd drive and open it up, but all you get is an empty folder. when you remove the DVD it renames itself back to "DVD-RW". my liteon combo drive opens the dvd's no prob. The pioneer says it has the latest firmware. anyone have any ideas? RMA the drive?