--- synaptic-0.75.2ubuntu8.orig/common/rpackage.cc	2011-11-12 23:28:48.034560231 -0500
+++ synaptic-0.75.2ubuntu8/common/rpackage.cc	2011-11-12 21:24:36.574390206 -0500
@@ -193,6 +193,14 @@
    filelist.erase(filelist.begin(), filelist.end());
 
    string f = "/var/lib/dpkg/info/" + string(name()) + ".list";
+#ifdef WITH_APT_MULTIARCH_SUPPORT
+   // In multi-arch situations the package filename might include the
+   // architecture even if it is the native package.  Try to open that
+   // version as well.
+   if (!FileExists(f)) {
+      f = "/var/lib/dpkg/info/" + _package->FullName(false) + ".list";
+   }
+#endif
    if (FileExists(f)) {
       ifstream in(f.c_str());
       if (!in != 0)