It seems to me the drive still thinks it has something to write, it's as if some data is still being quewed to write or similar.
I had something like this on a customers, it would always happen when he used packet writing on a particular rewritable disk he'd had, got rid of the disk and so got rid of his problem.
Also I have known virus's produce this fault.
One option maybe to uninstall and reinstall your Roxio.
Martin
Replying helps further our knowledge, without comment leaves us wondering.