So booting the 2.6.15-23 or 2.6.15-25 amd64-generic kernels did not work? Obviosly the -generic kernel did work, since you were able to boot and use the installer.
Something about your installed environment seems to be broken. Can you at least get dmesg from the booted (broken) system? ** Changed in: linux-source-2.6.15 (Ubuntu) Status: Unconfirmed => Needs Info -- 6.06 64bit kernel totally broken after install, gcc3.3 fixes https://launchpad.net/bugs/51157 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs