I looked at the PO file, and it appears that "disc" is referring to a CD, so this is correct usage of the word. There is one error in the file and that is "Could not transfer files to create disk image.", which should be "Could not transfer files to create disc image."
If you think that using disc is an error, file a bug upstream about it - http://bugzilla.gnome.org/simple-bug-guide.cgi -- "Disc" in en_GB translation should be "Disk" https://launchpad.net/bugs/68955 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
