I have the same problem on a Samsung X10 laptop. I could not do a fresh install becuase the alternative installer could not mount the cdrom despite booting from it to begin with. After an online upgrade from Edgy I now have a phantom cdrom icon on the desktop and no access to the real one. A bit of searching reveals that this is a common problem with Feisty.
-- [feisty] cdrom double entries https://launchpad.net/bugs/77990 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
