After getting the new 1.2.1-23 version of the live disk, clonezilla no longer ejects the CD at the end of the cloning proceedure and selecting to power off.
Earlier versions, 1.2.0 and 1.1.x did eject correctlly.
Am running on a DELL Precision T3400 wih it's standard dual layer DVDRW drive.
Could you give testing clonezilla live (1.2.1-35) a try ?