I've had this bug for a long time - can't say on which version it started.
The compilation volume lable doesn't change when you start a new compilation. It happens on CD-ROM ISO type compilation, as well as on VCD and SVCD - I haven't tried others. Instead of the default "new" volume label Nero remembers the last lable used.
I searched the forums for this bug but didn't find it. Can anyone confirm? Is there a solution (perhaps a registry fix?)