Some problem with mounting CD/DVD

[mvenkatapathy]

Hi all,
I have a problem when inserting CD/DVD in my system.
Whenever we insert a CD/DVD, it should get automatically mounted... right ?
But, there is problem here. The CD/DVD is not mounted automatically when inserted. It asks whether to create new CD in a dialog box.

I found these when 'dmesg' -ing:

cdrom: This disc doesn't have any tracks I recognize!
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
cdrom: This disc doesn't have any tracks I recognize!
cdrom: This disc doesn't have any tracks I recognize!
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
cdrom: This disc doesn't have any tracks I recognize!
cdrom: This disc doesn't have any tracks I recognize!

Could anyone help me ?

Note: Manually mounting the CD/DVD using 'mount' works...

[iwanabeguru]

Do the problem appear with other disks or just with that one?

[mvenkatapathy]

I have not checked with other disks, as I am out of an extra disk