QUOTE (firenhancer @ Mar 9 2006, 07:50 AM)

The first thing to try is updating the firmware in the recorder drive. Alternatively, try saving it as a disc image file by going into the File menu --> Save as a disc image and then burn the saved image file using "Copy" --> Image file.
I did check the Apple site and see there is an update. I downloaded it but haven't installed it yet. I'll look around for any other more recent firmware updates too. According to the Apple site info:
Enhancements Delivered with the Mac OS X 10.1.3 Update (Released 9/20/04; I'm running 10.4.5 so I assume the update is already there but one never knows...)
"Adds or extends compatibility with many FireWire- and USB-based CD burners including: LaCie 16x10x40 U-RW (FireWire connection) and CDRW 24-10-40 U & I (FireWire connection) ..."
The LaCie Slim is USB only and may not be fully supported on the Intel iMac. If that is the case I'll sell it off and replace it with an external burner that is proven to work.
Presently I am able to copy off DVD data/files to a desktop folder, edit the content and reburn using the Intel iMac internal burner but it is already hinting at hardware wear/tear/failure. If it goes out entirely I'd have to return the machine for replacement and I want to avoid that for as long as possible, hence, I need an external that will burn DVDRW/CDRW consistently.
Will be back with any results or observations. Thanks so much for taking the time to respond.