diff --git a/OpenSim/Region/CoreModules/Avatar/UserProfiles/UserProfileModule.cs b/OpenSim/Region/CoreModules/Avatar/UserProfiles/UserProfileModule.cs
index 322addd805..97bb78199f 100644
--- a/OpenSim/Region/CoreModules/Avatar/UserProfiles/UserProfileModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/UserProfiles/UserProfileModule.cs
@@ -60,8 +60,8 @@ namespace OpenSim.Region.OptionalModules.Avatar.UserProfiles
         // The pair of Dictionaries are used to handle the switching of classified ads
         // by maintaining a cache of classified id to creator id mappings and an interest
         // count. The entries are removed when the interest count reaches 0.
-        Dictionary<UUID,UUID> classifiedCache = new Dictionary<UUID, UUID>();
-        Dictionary<UUID,int> classifiedInterest = new Dictionary<UUID, int>();
+        Dictionary<UUID,UUID> m_classifiedCache = new Dictionary<UUID, UUID>();
+        Dictionary<UUID,int> m_classifiedInterest = new Dictionary<UUID, int>();
 
         public Scene Scene
         {
@@ -331,16 +331,19 @@ namespace OpenSim.Region.OptionalModules.Avatar.UserProfiles
 
                 classifieds[cid] = name;
 
-                if(!classifiedCache.ContainsKey(cid))
+                lock(m_classifiedCache)
                 {
-                    lock(classifiedCache)
-                        classifiedCache.Add(cid,creatorId);
-                    lock(classifiedInterest)
-                        classifiedInterest.Add(cid, 0);
+                    if (!m_classifiedCache.ContainsKey(cid))
+                    {
+                        m_classifiedCache.Add(cid,creatorId);
+
+                        lock(m_classifiedInterest)
+                            m_classifiedInterest.Add(cid, 0);
+                    }
                 }
 
-                lock(classifiedInterest)
-                    classifiedInterest[cid] ++;
+                lock(m_classifiedInterest)
+                    m_classifiedInterest[cid]++;
             }
 
             remoteClient.SendAvatarClassifiedReply(new UUID(args[0]), classifieds);
@@ -352,19 +355,20 @@ namespace OpenSim.Region.OptionalModules.Avatar.UserProfiles
             UserClassifiedAdd ad = new UserClassifiedAdd();
             ad.ClassifiedId = queryClassifiedID;
 
-            if(classifiedCache.ContainsKey(queryClassifiedID))
+            lock (classifie
+            if (m_classifiedCache.ContainsKey(queryClassifiedID))
             {   
-                target = classifiedCache[queryClassifiedID];
+                target = m_classifiedCache[queryClassifiedID];
 
-                lock(classifiedInterest)
-                    classifiedInterest[queryClassifiedID] --;
+                lock(m_classifiedInterest)
+                    m_classifiedInterest[queryClassifiedID] --;
 
-                if(classifiedInterest[queryClassifiedID] == 0)
+                if(m_classifiedInterest[queryClassifiedID] == 0)
                 {
-                    lock(classifiedInterest)
-                        classifiedInterest.Remove(queryClassifiedID);
-                    lock(classifiedCache)
-                        classifiedCache.Remove(queryClassifiedID);
+                    lock(m_classifiedInterest)
+                        m_classifiedInterest.Remove(queryClassifiedID);
+                    lock(m_classifiedCache)
+                        m_classifiedCache.Remove(queryClassifiedID);
                 }
             }
             
@@ -1339,4 +1343,4 @@ namespace OpenSim.Region.OptionalModules.Avatar.UserProfiles
         }
         #endregion Web Util
     }
-}
+}
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