diff --git a/OpenSim/Data/MySQL/MySQLAuthenticationData.cs b/OpenSim/Data/MySQL/MySQLAuthenticationData.cs
index 8d82f61bda..664ce84f7c 100644
--- a/OpenSim/Data/MySQL/MySQLAuthenticationData.cs
+++ b/OpenSim/Data/MySQL/MySQLAuthenticationData.cs
@@ -79,14 +79,7 @@ namespace OpenSim.Data.MySQL
                 {
                     ret.PrincipalID = principalID;
 
-                    if (m_ColumnNames == null)
-                    {
-                        m_ColumnNames = new List<string>();
-
-                        DataTable schemaTable = result.GetSchemaTable();
-                        foreach (DataRow row in schemaTable.Rows)
-                            m_ColumnNames.Add(row["ColumnName"].ToString());
-                    }
+                    CheckColumnNames(result);
 
                     foreach (string s in m_ColumnNames)
                     {
@@ -105,6 +98,20 @@ namespace OpenSim.Data.MySQL
             }
         }
 
+        private void CheckColumnNames(IDataReader result)
+        {
+            if (m_ColumnNames != null)
+                return;
+
+            List<string> columnNames = new List<string>();
+
+            DataTable schemaTable = result.GetSchemaTable();
+            foreach (DataRow row in schemaTable.Rows)
+                columnNames.Add(row["ColumnName"].ToString());
+
+            m_ColumnNames = columnNames;
+        }
+
         public bool Store(AuthenticationData data)
         {
             if (data.Data.ContainsKey("UUID"))
diff --git a/OpenSim/Data/MySQL/MySQLGenericTableHandler.cs b/OpenSim/Data/MySQL/MySQLGenericTableHandler.cs
index 754cf725f0..da8e958b07 100644
--- a/OpenSim/Data/MySQL/MySQLGenericTableHandler.cs
+++ b/OpenSim/Data/MySQL/MySQLGenericTableHandler.cs
@@ -91,15 +91,17 @@ namespace OpenSim.Data.MySQL
             if (m_ColumnNames != null)
                 return;
 
-            m_ColumnNames = new List<string>();
+            List<string> columnNames = new List<string>();
 
             DataTable schemaTable = reader.GetSchemaTable();
             foreach (DataRow row in schemaTable.Rows)
             {
                 if (row["ColumnName"] != null &&
                         (!m_Fields.ContainsKey(row["ColumnName"].ToString())))
-                    m_ColumnNames.Add(row["ColumnName"].ToString());
+                    columnNames.Add(row["ColumnName"].ToString());
             }
+
+            m_ColumnNames = columnNames;
         }
 
         public virtual T[] Get(string field, string key)
diff --git a/OpenSim/Data/MySQL/MySQLRegionData.cs b/OpenSim/Data/MySQL/MySQLRegionData.cs
index c20c39263a..d1f1932dd8 100644
--- a/OpenSim/Data/MySQL/MySQLRegionData.cs
+++ b/OpenSim/Data/MySQL/MySQLRegionData.cs
@@ -162,17 +162,7 @@ namespace OpenSim.Data.MySQL
                         ret.sizeX = Convert.ToInt32(result["sizeX"]);
                         ret.sizeY = Convert.ToInt32(result["sizeY"]);
 
-                        if (m_ColumnNames == null)
-                        {
-                            m_ColumnNames = new List<string>();
-
-                            DataTable schemaTable = result.GetSchemaTable();
-                            foreach (DataRow row in schemaTable.Rows)
-                            {
-                                if (row["ColumnName"] != null)
-                                    m_ColumnNames.Add(row["ColumnName"].ToString());
-                            }
-                        }
+                        CheckColumnNames(result);
 
                         foreach (string s in m_ColumnNames)
                         {
@@ -187,7 +177,11 @@ namespace OpenSim.Data.MySQL
                             if (s == "locY")
                                 continue;
 
-                            ret.Data[s] = result[s].ToString();
+                            object value = result[s];
+                            if (value is DBNull)
+                                ret.Data[s] = null;
+                            else
+                                ret.Data[s] = result[s].ToString();
                         }
 
                         retList.Add(ret);
@@ -198,6 +192,23 @@ namespace OpenSim.Data.MySQL
             return retList;
         }
 
+        private void CheckColumnNames(IDataReader result)
+        {
+            if (m_ColumnNames != null)
+                return;
+
+            List<string> columnNames = new List<string>();
+
+            DataTable schemaTable = result.GetSchemaTable();
+            foreach (DataRow row in schemaTable.Rows)
+            {
+                if (row["ColumnName"] != null)
+                    columnNames.Add(row["ColumnName"].ToString());
+            }
+
+            m_ColumnNames = columnNames;
+        }
+
         public bool Store(RegionData data)
         {
             if (data.Data.ContainsKey("uuid"))
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
index 3f261ea3d9..7fc73375ce 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
@@ -1617,7 +1617,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         public Object osParseJSONNew(string JSON)
         {
-            CheckThreatLevel(ThreatLevel.None, "osParseJSON");
+            CheckThreatLevel(ThreatLevel.None, "osParseJSONNew");
 
             m_host.AddScriptLPS(1);
 
diff --git a/OpenSim/Services/LLLoginService/LLLoginResponse.cs b/OpenSim/Services/LLLoginService/LLLoginResponse.cs
index 844c5aeb41..10a44edc52 100644
--- a/OpenSim/Services/LLLoginService/LLLoginResponse.cs
+++ b/OpenSim/Services/LLLoginService/LLLoginResponse.cs
@@ -349,7 +349,26 @@ namespace OpenSim.Services.LLLoginService
 
         private void SetDefaultValues()
         {
-            DST = TimeZone.CurrentTimeZone.IsDaylightSavingTime(DateTime.Now) ? "Y" : "N";
+            TimeZoneInfo gridTimeZone;
+
+            try
+            {
+                // First try to fetch DST from Pacific Standard Time, because this is
+                // the one expected by the viewer. "US/Pacific" is the string to search 
+                // on linux and mac, and should work also on Windows (to confirm)
+                gridTimeZone = TimeZoneInfo.FindSystemTimeZoneById("US/Pacific");
+            }
+            catch (Exception e)
+            {
+                m_log.WarnFormat(
+                    "[TIMEZONE]: {0} Falling back to system time. System time should be set to Pacific Standard Time to provide the expected time",
+                    e.Message);
+
+                gridTimeZone = TimeZoneInfo.Local;
+            }
+
+            DST = gridTimeZone.IsDaylightSavingTime(DateTime.Now) ? "Y" : "N";
+
             StipendSinceLogin = "N";
             Gendered = "Y";
             EverLoggedIn = "Y";