That's similar to my findings with my Iomega Super DVD writer also. (IMPORTANT NOTE: both are connected via USB 2.0) I can use them both: one to read, the other to write but I have to observe the following conditions:
- PlexTools can NOT be loaded and/or running when I use the Iomega Super DVD writer. Otherwise, like I said before, the system locks up.
- I can't have AnyDVD and Plextools running at the same time due to the increased potential of hang ups and system lock ups. Other programs may have issues with PlexTools, I'll have to test those later.
One thing I'm currently doing now that I haven't posted in my thread yet is that since these drives are both USB 2.0, I just plan to keep them off until I need one or both of them. As I type this message, I have both drives off - don't have plans to burn anything right now. I do have AnyDVD running though as I have to auto run at start up. I can still use it with my notebook's built-in CD-RW/DVD-ROM drive - which by the way has not had issues with either USB drive or both of them together.
I have read the entire manual now about twice and on page 19 there is the following caution:
The PX-716UF should be the only device on the cable. Do not daisy-chain the PX-716UF with other IEEE 1394/Firewire devices or CONNECT THE DRIVE TO A USB HUB.
Now I do have a tiny hub. I don't have the PX-716UF connected to it. However, even though my notebook has 4 USB 2.0 jacks, aren't they 'connected' together inside the notebook to a USB controller/hub. Maybe this is why I have had issues using both USB drives and have had to find 'work-a-rounds'. Just a thought. Feedback welcome.