--- rpm-5.4.10/lib/rpmds.c~	2012-07-06 17:39:16.000000000 +0200
+++ rpm-5.4.10/lib/rpmds.c	2012-09-13 12:40:32.439076460 +0200
@@ -4036,6 +4036,12 @@
 
 assert((rpmdsFlags(A) & RPMSENSE_SENSEMASK) == A->ns.Flags);
 assert((rpmdsFlags(B) & RPMSENSE_SENSEMASK) == B->ns.Flags);
+    /* Different namespaces don't overlap. */
+    if (A->ns.Type != B->ns.Type) {
+	result = 0;
+	goto exit;
+    }
+
     /* Different names (and/or name.arch's) don't overlap. */
     if (rpmdsNAcmp(A, B)) {
 	result = 0;