CD drive won't refresh

My Asus CD/DVD combo drive will not update the volume OR THE content
informaiton when I swap disks. I noticed this some months ago.

I reformatted my hard drive (for other reasons) and found that both of my
CD/DVD combo drives will not reflect the new disk (i.e. installing my
programs, WIN XP SP2 displays the volume name of the FIRST disk. The volume
name (preceding the drive letter) never changes when I insert other program
disks.) In addition, the displayed content from the FIRST disk remains. The
only way to clear the content is to eject the disk, F5, re-insert the disk.
The new CONTENT will display, but the VOLUME name never changes until I log
out of Windows.

This is particularly troublesome when playing DVDs.

Is a registry setting off? If so, anyone know what setting I need to check?