Totem won't eject DVD from the drive after click on "eject".

Be sure your cd is not mounted by the system.

Please open a Terminal from the menu Applications->Accessories->Terminal and type:

sudo mount

give your user password when requested, you don't see nothing when you type it, then press enter.

copy and paste result here

Then try to force a terminal eject command, type:

eject
or
sudo eject

Please give us some feedback

Thank you

Thank you so much for your help. I did what you described and this is the result:
/dev/hdc1 on / type ext3 (rw,errors=remount-ro)
proc on /proc type proc (rw)
/sys on /sys type sysfs (rw)
varrun on /var/run type tmpfs (rw)
varlock on /var/lock type tmpfs (rw)
procbususb on /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
devshm on /dev/shm type tmpfs (rw)
lrm on /lib/modules/2.6.15-29-386/volatile type tmpfs (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)

I try "eject" at the end of DVD playing and found the problem persisted. I still could not eject DVD after the playing. Is there any other way to resolve the problem?
"Eject" command works fine when there is no DVD in the drive.

Thanks

Please open a terminal and type:
tail -F /etc/var/log/messages
and, or
tail -F /etc/var/log/syslog
don't close your terminal, you will see system messages, then try to play with cd device

Hope this helps you to find some more error or diagnostic message from the system.

Stop tail -F .... with CTRL+C

Then you can also try to chech dmesg messages:

dmesg | less