This seems also to be related to the bug 98795 I raised. Not only you can't remove CD-ROM but if you click on any options in software source dialog shown by in the screenshot.png dialog will endup by corrupting the source.lust.
I think this bug is very serious as no other application that reads the source.list will return the error I put in bug 98795. Try doing an ubuntu software update and you'll see the error message. Unless this bug is corrected. the software source dialog can't be used. New user won't know how to fix source.list once corrupted and will be intimidated to use shell to comment the CD-ROM line in source.list. -- Feisty Beta - Cannot disable installer CD repo in Synaptic https://bugs.launchpad.net/bugs/97629 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs