Just in case I wasn't clear: The "check cd for defects" thing appears right after booting the desktop CD. If it does turn out to be a bad CD, you can check the MD5 of the ISO you downloaded. If that is OK, try burning at a low speed ( 8x or so).
-- Crashed on install... https://launchpad.net/bugs/53863 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs