Index: /trunk/BNC/src/PPP/pppFilter.cpp
===================================================================
--- /trunk/BNC/src/PPP/pppFilter.cpp	(revision 6011)
+++ /trunk/BNC/src/PPP/pppFilter.cpp	(revision 6012)
@@ -463,5 +463,11 @@
   }
   else {
-    _QFlt.SymSubMatrix(1,3) = QFltOld.SymSubMatrix(1,3) + Qxyz;
-  }
-}
+    double dt = _epoTime - _firstEpoTime;
+    if (dt < OPT->_seedingTime) {
+      _QFlt.SymSubMatrix(1,3) = QFltOld.SymSubMatrix(1,3);
+    }
+    else {
+      _QFlt.SymSubMatrix(1,3) = QFltOld.SymSubMatrix(1,3) + Qxyz;
+    }
+  }
+}