Just downloaded the latest kubuntu 12.04.1 amd-64 cd, and it boots as expected, without errors. So I will mark this as resolved.
** Changed in: linux (Ubuntu) Status: Incomplete => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/519123 Title: Cannot boot 64-bit live CDs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/519123/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs