diff --git a/Lite/Controls/ServerTab.xaml.cs b/Lite/Controls/ServerTab.xaml.cs
index 42e8af42..f3a6ab95 100644
--- a/Lite/Controls/ServerTab.xaml.cs
+++ b/Lite/Controls/ServerTab.xaml.cs
@@ -2288,7 +2288,7 @@ private async void LiveSnapshot_Click(object sender, RoutedEventArgs e)
                     HostName = reader.IsDBNull(21) ? "" : reader.GetString(21),
                     ProgramName = reader.IsDBNull(22) ? "" : reader.GetString(22),
                     OpenTransactionCount = reader.IsDBNull(23) ? 0 : Convert.ToInt32(reader.GetValue(23)),
-                    PercentComplete = reader.IsDBNull(24) ? 0m : reader.GetDecimal(24),
+                    PercentComplete = reader.IsDBNull(24) ? 0m : Convert.ToDecimal(reader.GetValue(24)),
                     CollectionTime = snapshotTime
                 });
             }
diff --git a/Lite/Database/DuckDbInitializer.cs b/Lite/Database/DuckDbInitializer.cs
index d9628c07..79603449 100644
--- a/Lite/Database/DuckDbInitializer.cs
+++ b/Lite/Database/DuckDbInitializer.cs
@@ -522,7 +522,7 @@ public async Task CreateArchiveViewsAsync()
                 if (hasParquetFiles)
                 {
                     var globPath = parquetGlob.Replace("\\", "/");
-                    viewSql = $"CREATE OR REPLACE VIEW v_{table} AS SELECT * FROM {table} UNION ALL SELECT * FROM read_parquet('{globPath}', union_by_name=true)";
+                    viewSql = $"CREATE OR REPLACE VIEW v_{table} AS SELECT * FROM {table} UNION ALL BY NAME SELECT * FROM read_parquet('{globPath}', union_by_name=true)";
                 }
                 else
                 {
diff --git a/Lite/MainWindow.xaml.cs b/Lite/MainWindow.xaml.cs
index e7ef039f..0c8427d6 100644
--- a/Lite/MainWindow.xaml.cs
+++ b/Lite/MainWindow.xaml.cs
@@ -354,7 +354,7 @@ private void UpdateCollectorHealth()
         else
         {
             CollectorHealthText.Text = $"Collectors: {health.TotalCollectors} OK";
-            CollectorHealthText.Foreground = (System.Windows.Media.Brush)FindResource("ForegroundMutedBrush");
+            CollectorHealthText.Foreground = (System.Windows.Media.Brush)FindResource("ForegroundBrush");
             CollectorHealthText.ToolTip = null;
         }
     }
diff --git a/Lite/Services/RemoteCollectorService.QuerySnapshots.cs b/Lite/Services/RemoteCollectorService.QuerySnapshots.cs
index 17b5d847..bb469fe7 100644
--- a/Lite/Services/RemoteCollectorService.QuerySnapshots.cs
+++ b/Lite/Services/RemoteCollectorService.QuerySnapshots.cs
@@ -157,7 +157,7 @@ private async Task<int> CollectQuerySnapshotsAsync(ServerConnection server, Canc
                        .AppendValue(reader.IsDBNull(21) ? (string?)null : reader.GetString(21))                /* host_name */
                        .AppendValue(reader.IsDBNull(22) ? (string?)null : reader.GetString(22))                /* program_name */
                        .AppendValue(reader.IsDBNull(23) ? 0 : Convert.ToInt32(reader.GetValue(23)))            /* open_transaction_count */
-                       .AppendValue(reader.IsDBNull(24) ? 0m : reader.GetDecimal(24))                          /* percent_complete */
+                       .AppendValue(reader.IsDBNull(24) ? 0m : Convert.ToDecimal(reader.GetValue(24)))        /* percent_complete */
                        .EndRow();
 
                     rowsCollected++;
diff --git a/Lite/Services/RemoteCollectorService.WaitStats.cs b/Lite/Services/RemoteCollectorService.WaitStats.cs
index 52767e7f..2ba17854 100644
--- a/Lite/Services/RemoteCollectorService.WaitStats.cs
+++ b/Lite/Services/RemoteCollectorService.WaitStats.cs
@@ -22,19 +22,15 @@ namespace PerformanceMonitorLite.Services;
 
 public partial class RemoteCollectorService
 {
-    private HashSet<string>? _ignoredWaitTypes;
+    private readonly Lazy<HashSet<string>> _ignoredWaitTypes;
 
     /// <summary>
-    /// Gets the set of wait types to ignore during collection.
+    /// Loads the set of wait types to ignore during collection.
+    /// Thread-safe via Lazy&lt;T&gt; (multiple server tasks call this in parallel).
     /// </summary>
-    private HashSet<string> GetIgnoredWaitTypes()
+    private HashSet<string> LoadIgnoredWaitTypes()
     {
-        if (_ignoredWaitTypes != null)
-        {
-            return _ignoredWaitTypes;
-        }
-
-        _ignoredWaitTypes = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        var waits = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
 
         var configPath = Path.Combine(App.ConfigDirectory, "ignored_wait_types.json");
         if (File.Exists(configPath))
@@ -51,7 +47,7 @@ private HashSet<string> GetIgnoredWaitTypes()
                         var waitType = wait.GetString();
                         if (!string.IsNullOrEmpty(waitType))
                         {
-                            _ignoredWaitTypes.Add(waitType);
+                            waits.Add(waitType);
                         }
                     }
                 }
@@ -62,7 +58,7 @@ private HashSet<string> GetIgnoredWaitTypes()
             }
         }
 
-        return _ignoredWaitTypes;
+        return waits;
     }
 
     /// <summary>
@@ -82,7 +78,7 @@ FROM sys.dm_os_wait_stats AS ws
 WHERE ws.wait_time_ms > 0
 OPTION(RECOMPILE);";
 
-        var ignoredWaits = GetIgnoredWaitTypes();
+        var ignoredWaits = _ignoredWaitTypes.Value;
         var serverId = GetServerId(server);
         var collectionTime = DateTime.UtcNow;
         var rowsCollected = 0;
diff --git a/Lite/Services/RemoteCollectorService.cs b/Lite/Services/RemoteCollectorService.cs
index 565159ac..7d3bee6d 100644
--- a/Lite/Services/RemoteCollectorService.cs
+++ b/Lite/Services/RemoteCollectorService.cs
@@ -112,6 +112,7 @@ public RemoteCollectorService(
         _scheduleManager = scheduleManager;
         _logger = logger;
         _deltaCalculator = new DeltaCalculator(logger);
+        _ignoredWaitTypes = new Lazy<HashSet<string>>(LoadIgnoredWaitTypes);
     }
 
     /// <summary>