I'm taking a look at this bug. It appears to be because the source package for the binaries in squeeze is 'xmame', but the source package for the binaries in wheezy is 'mame'.
Also, this commit may be related: commit 6d0c77edac6cf78e2fbe6e71e64836a51fb40623 Author: Emmanuel Kasper <emman...@libera.cc> Date: Wed Apr 4 14:01:03 2012 +0200 Remove the mame.preinst and sdlmame.preinst the cases these two fiels deal should have been taken care by previous upgra diff --git a/debian/mame.preinst b/debian/mame.preinst deleted file mode 100644 index 4c3c1de..0000000 --- a/debian/mame.preinst -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org