diff --git a/EduNetworkBuilder/Network.cs b/EduNetworkBuilder/Network.cs
index f1e0e43..63ed66d 100644
--- a/EduNetworkBuilder/Network.cs
+++ b/EduNetworkBuilder/Network.cs
@@ -179,6 +179,57 @@ namespace EduNetworkBuilder
             }
         }
 
+        public bool Equals(Network CompareTo)
+        {
+            if (PuzzleName != CompareTo.PuzzleName) return false;
+            if (myHeight != CompareTo.myHeight) return false;
+            if (myWidth != CompareTo.myWidth) return false;
+            if (Level != CompareTo.Level) return false;
+            if (SortOrder != CompareTo.SortOrder) return false;
+            if (OptionShowLabels != CompareTo.OptionShowLabels) return false;
+            if (ShowLabelsHere != CompareTo.ShowLabelsHere) return false;
+            if (VLANsEnabled != CompareTo.VLANsEnabled) return false;
+            if (VLANPacketColors != CompareTo.VLANPacketColors) return false;
+            if (_LoadedFromResource != CompareTo._LoadedFromResource) return false;
+            if (!NetMessage.Equals(CompareTo.NetMessage)) return false;
+            if (!NetTitle.Equals(CompareTo.NetTitle)) return false;
+            if (!NetURL.Equals(CompareTo.NetURL)) return false;
+            if (itemsize != CompareTo.itemsize) return false;
+            if (UniqueIdentifier != CompareTo.UniqueIdentifier) return false;
+            if (IsRandomNetwork != CompareTo.IsRandomNetwork) return false;
+            if (NetworkFilename != CompareTo.NetworkFilename) return false;
+            if (AlreadyDisplayedMessage != CompareTo.AlreadyDisplayedMessage) return false;
+            if (HintsToDisplay != CompareTo.HintsToDisplay) return false;
+            if (StartingHelpLevel != CompareTo.StartingHelpLevel) return false;
+            if (PuzzleIsSolved != CompareTo.PuzzleIsSolved) return false;
+
+            if (NetTests.Count != CompareTo.NetTests.Count) return false;
+            for (int i = 0; i < NetTests.Count; i++)
+                if (!NetTests[i].Equals(CompareTo.NetTests[i])) return false;
+
+            if (BrokenItems.Count != CompareTo.BrokenItems.Count) return false;
+            for (int i = 0; i < BrokenItems.Count; i++)
+                if (BrokenItems[i] != CompareTo.BrokenItems[i]) return false;
+
+            if (NetComponents.Count != CompareTo.NetComponents.Count) return false;
+            for (int i = 0; i < NetComponents.Count; i++)
+                if (!NetComponents[i].Equals(CompareTo.NetComponents[i])) return false;
+
+            if (Shapes.Count != CompareTo.Shapes.Count) return false;
+            for (int i = 0; i < Shapes.Count; i++)
+                if (!Shapes[i].Equals(CompareTo.Shapes[i])) return false;
+
+            if (PingTestStats.Count != CompareTo.PingTestStats.Count) return false;
+            if (SuggestedReadings.Count != CompareTo.SuggestedReadings.Count) return false;
+            if (myMessages.Count != CompareTo.myMessages.Count) return false;
+
+            if (VlanNames.Count != CompareTo.VlanNames.Count) return false;
+            for (int i = 0; i < VlanNames.Count; i++)
+                if (!VlanNames[i].Equals(CompareTo.VlanNames[i])) return false;
+
+            return true;
+        }
+
         public void ClearComponents()
         {
             NetComponents.Clear();
diff --git a/EduNetworkBuilder/NetworkBuilder.cs b/EduNetworkBuilder/NetworkBuilder.cs
index 873ead7..16c18fa 100644
--- a/EduNetworkBuilder/NetworkBuilder.cs
+++ b/EduNetworkBuilder/NetworkBuilder.cs
@@ -243,7 +243,8 @@ namespace EduNetworkBuilder
 
         public void StoreNetworkState(Network toStore)
         {
-            //We should verify something has changed before storing it.  Oh well...
+            if (storedNetworkStates.Count > 0 && toStore.Equals(storedNetworkStates[0]))
+                return; //The states are identical.  Do not store this state.
             storedNetworkStates.Insert(0,Network.DeepClone(toStore));
             int maxCount = 30;
             if(storedNetworkStates.Count > maxCount)