Please attach your copy of /etc/apt/sources.list and paste the output of 'apt-cache policy libglu1-mesa libglu1-mesa' You most likely have unsupported third party packages installed which are breaking the upgrade.
** Changed in: mesa (Ubuntu) Status: Unconfirmed => Needs Info -- libglu1-mesa-dev depends on libglu1-mesa (= 6.5.1~20060817-0ubuntu3) but 6.5.1+cvs20060824 is to be installed https://launchpad.net/bugs/65803 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs