Maintainers for mumps are Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>.
You may want to refer to the following individual bug pages: libmumps-5.1.2, libmumps-5.3, libmumps-5.5, libmumps-5.6t64, libmumps-5.7, libmumps-64pord-5.3, libmumps-64pord-5.5, libmumps-64pord-5.6t64, libmumps-64pord-5.7, libmumps-64pord-ptscotch-5.3, libmumps-64pord-ptscotch-5.5, libmumps-64pord-ptscotch-5.6t64, libmumps-64pord-ptscotch-5.7, libmumps-64pord-scotch-5.3, libmumps-64pord-scotch-5.5, libmumps-64pord-scotch-5.6t64, libmumps-64pord-scotch-5.7, libmumps-64pord-seq-5.3, libmumps-64pord-seq-5.5, libmumps-64pord-seq-5.6t64, libmumps-64pord-seq-5.7, libmumps-dev, libmumps-headers-dev, libmumps-ptscotch-5.1.2, libmumps-ptscotch-5.3, libmumps-ptscotch-5.5, libmumps-ptscotch-5.6t64, libmumps-ptscotch-5.7, libmumps-ptscotch-dev, libmumps-scotch-5.1.2, libmumps-scotch-5.3, libmumps-scotch-5.5, libmumps-scotch-5.6t64, libmumps-scotch-5.7, libmumps-scotch-dev, libmumps-seq-5.1.2, libmumps-seq-5.3, libmumps-seq-5.5, libmumps-seq-5.6, libmumps-seq-5.6t64, libmumps-seq-5.7, libmumps-seq-dev, libmumps64-dev, libmumps64-ptscotch-dev, libmumps64-scotch-dev, libmumps64-seq-dev, mumps-test.
You might like to refer to the mumps package page, or to the Package Tracking System.
If you find a bug not listed here, please report it.