Solved ! This problem has occurring because the automatic detection of LAN is wrong.
To install the Ubuntu alternate you need CANCEL the automatic detection of LAN and configure manually your lan, and PUT YOUR *NAME SERVER* (DNS) IN BLANK. so the installation will continue very well. OR ... well, the installation don't stop really, it only try to resolve the names of repositories. And this step may to delay for 45 minutes and 33 seconds. -- Installation of Alternate CD crashes after tomboy / 85% https://bugs.launchpad.net/bugs/128165 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