Maintainers for libgtk2.0-0t64 are Debian GNOME Maintainers <pkg-gnome-maintainers@lists.alioth.debian.org>.
You may want to refer to the following packages that are part of the same source: gir1.2-gtk-2.0, gtk2-engines-pixbuf, gtk2.0-examples, libgail-common, libgail-dev, libgail-doc, libgail18, libgail18t64, libgtk2.0-0, libgtk2.0-bin, libgtk2.0-common, libgtk2.0-dev, libgtk2.0-doc.
You might like to refer to the libgtk2.0-0t64 package page, to the Package Tracking System, or to the source package src:gtk+2.0's bug page.
If you find a bug not listed here, please report it.