Index: blocks/dock.js
===================================================================
--- blocks/dock.js	(revision )
+++ blocks/dock.js	(revision )
@@ -561,6 +561,10 @@
     var blockregions = [];
     var populatedblockregions = 0;
     this.Y.all('.block-region').each(function(region){
+        // Only care about pre/post regions
+        if (!(new RegExp('pre|post').test(region.get('id')))) {
+            return;
+        }
         var hasblocks = (region.all('.block').size() > 0);
         if (hasblocks) {
             populatedblockregions++;