Thanks for taking your time to report this issue and making Ubuntu better. I get the same error message when running dpkg-reconfigure on Natty. Looks like the variables aren't set, though the reconfiguring seems to run without problems.
** Changed in: dpkg (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/706354 Title: dpkg-maintscript-helper: warning: environment variable DPKG_MAINTSCRIPT_PACKAGE missing -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs