Index: trunk/psModules/src/objects/pmSourceMoments.c
===================================================================
--- trunk/psModules/src/objects/pmSourceMoments.c	(revision 19884)
+++ trunk/psModules/src/objects/pmSourceMoments.c	(revision 19894)
@@ -6,6 +6,6 @@
  *  @author EAM, IfA: significant modifications.
  *
- *  @version $Revision: 1.2 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2008-10-03 21:55:42 $
+ *  @version $Revision: 1.3 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2008-10-04 02:29:19 $
  *
  *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
@@ -211,4 +211,5 @@
             // XXX EAM : should this limit be user-defined?
             if (PS_SQR(pDiff) < wDiff) continue;
+            if (pDiff < 0) continue;
 
             Sum += pDiff;
@@ -269,6 +270,13 @@
              source->moments->Mxxxx, source->moments->Mxxxy, source->moments->Mxxyy, source->moments->Mxyyy, source->moments->Myyyy);
 
+    if (source->moments->Mxx < 0) {
+	fprintf (stderr, "error: neg second moment??\n");
+    }
+    if (source->moments->Myy < 0) {
+	fprintf (stderr, "error: neg second moment??\n");
+    }
+
     // XXX TEST:
-    pmSourceMoments_Old (source, radius);
+    // pmSourceMoments_Old (source, radius);
     return(true);
 }