diff --git a/OnTopReplica/Actions.cs b/OnTopReplica/Actions.cs
deleted file mode 100644
index 8406001..0000000
--- a/OnTopReplica/Actions.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace OnTopReplica {
-
-    public delegate void Action();
-
-    public delegate void Action<T1>(T1 arg1);
-
-    public delegate void Action<T1, T2>(T1 arg1, T2 arg2);
-
-    public delegate void Action<T1, T2, T3>(T1 arg1, T2 arg2, T3 arg3);
-
-}
diff --git a/OnTopReplica/EnumerableExtensions.cs b/OnTopReplica/EnumerableExtensions.cs
deleted file mode 100644
index 71945c6..0000000
--- a/OnTopReplica/EnumerableExtensions.cs
+++ /dev/null
@@ -1,39 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace OnTopReplica {
-    /// <summary>
-    /// Extension methods for IEnumerable.
-    /// Poor man's LINQ.
-    /// </summary>
-    static class EnumerableExtensions {
-
-        /// <summary>
-        /// Gets the first element of an enumeration of a default value.
-        /// </summary>
-        public static T FirstOrDefault<T>(this IEnumerable<T> collection) {
-            if (collection == null)
-                throw new ArgumentNullException();
-
-            using (var enumerator = collection.GetEnumerator()) {
-                if (!enumerator.MoveNext())
-                    return default(T);
-                else
-                    return enumerator.Current;
-            }
-        }
-
-        /// <summary>
-        /// Checks whether an enumeration contains a value.
-        /// </summary>
-        public static bool Contains<T>(this IEnumerable<T> collection, T value) {
-            foreach (var v in collection)
-                if (v.Equals(value))
-                    return true;
-
-            return false;
-        }
-
-    }
-}
diff --git a/OnTopReplica/ExtensionAttribute.cs b/OnTopReplica/ExtensionAttribute.cs
deleted file mode 100644
index 09eb1e5..0000000
--- a/OnTopReplica/ExtensionAttribute.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace System.Runtime.CompilerServices {
-    /// <summary>
-    /// Fake extension attribute that adds extension method support to C# 2 (without System.Core.dll reference).
-    /// </summary>
-    class ExtensionAttribute : Attribute {
-    }
-}
diff --git a/OnTopReplica/FocusedTextBox.cs b/OnTopReplica/FocusedTextBox.cs
index 9acdca2..b2a2cc6 100644
--- a/OnTopReplica/FocusedTextBox.cs
+++ b/OnTopReplica/FocusedTextBox.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Text;
 using WindowsFormsAero;
 using System.Windows.Forms;
diff --git a/OnTopReplica/HotKeyTextBox.cs b/OnTopReplica/HotKeyTextBox.cs
index 78fd90a..9abcead 100644
--- a/OnTopReplica/HotKeyTextBox.cs
+++ b/OnTopReplica/HotKeyTextBox.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Text;
 using System.Windows.Forms;
 
diff --git a/OnTopReplica/MainForm.Designer.cs b/OnTopReplica/MainForm.Designer.cs
index 779cead..1c0ec00 100644
--- a/OnTopReplica/MainForm.Designer.cs
+++ b/OnTopReplica/MainForm.Designer.cs
@@ -485,17 +485,17 @@
             // 
             // MainForm
             // 
-            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.BackColor = System.Drawing.SystemColors.Control;
-            this.ClientSize = new System.Drawing.Size(269, 192);
+            this.ClientSize = new System.Drawing.Size(318, 226);
             this.ControlBox = false;
             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.SizableToolWindow;
             this.HideCaption = true;
             this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
             this.MaximizeBox = false;
             this.MinimizeBox = false;
-            this.MinimumSize = new System.Drawing.Size(40, 40);
+            this.MinimumSize = new System.Drawing.Size(44, 44);
             this.Name = "MainForm";
             this.Text = "OnTopReplica";
             this.TopMost = true;
diff --git a/OnTopReplica/MainForm.resx b/OnTopReplica/MainForm.resx
index c9dc6f3..5ef7664 100644
--- a/OnTopReplica/MainForm.resx
+++ b/OnTopReplica/MainForm.resx
@@ -112,27 +112,27 @@
     <value>2.0</value>
   </resheader>
   <resheader name="reader">
-    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
   <resheader name="writer">
-    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
-  <metadata name="menuContext.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+  <metadata name="menuContext.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>17, 17</value>
   </metadata>
-  <metadata name="menuWindows.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+  <metadata name="menuWindows.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>142, 17</value>
   </metadata>
-  <metadata name="menuOpacity.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+  <metadata name="menuOpacity.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>275, 17</value>
   </metadata>
-  <metadata name="menuResize.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+  <metadata name="menuResize.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>578, 17</value>
   </metadata>
-  <metadata name="menuFullscreenContext.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+  <metadata name="menuFullscreenContext.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>399, 17</value>
   </metadata>
-  <assembly alias="System.Drawing" name="System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
+  <assembly alias="System.Drawing" name="System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
   <data name="$this.Icon" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
     <value>
         AAABAAIAMDAAAAEAIACoJQAAJgAAABAQAAABACAAaAQAAM4lAAAoAAAAMAAAAGAAAAABACAAAAAAAAAA
diff --git a/OnTopReplica/OnTopReplica.csproj b/OnTopReplica/OnTopReplica.csproj
index b20ea75..6fcda6a 100644
--- a/OnTopReplica/OnTopReplica.csproj
+++ b/OnTopReplica/OnTopReplica.csproj
@@ -101,14 +101,11 @@
     </Reference>
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Actions.cs" />
     <Compile Include="AspectRatioForm.cs">
       <SubType>Form</SubType>
     </Compile>
     <Compile Include="CloneClickEventArgs.cs" />
     <Compile Include="CloseRequestEventArgs.cs" />
-    <Compile Include="EnumerableExtensions.cs" />
-    <Compile Include="ExtensionAttribute.cs" />
     <Compile Include="GeometryExtensions.cs" />
     <Compile Include="HotKeyTextBox.cs">
       <SubType>Component</SubType>
@@ -231,7 +228,6 @@
       <DesignTime>True</DesignTime>
       <DependentUpon>Strings.ru.resx</DependentUpon>
     </Compile>
-    <Compile Include="Tuples.cs" />
     <Compile Include="WindowListMenuManager.cs" />
     <Compile Include="WindowSeekers\BaseWindowSeeker.cs" />
     <Compile Include="WindowSeekers\ByClassWindowSeeker.cs" />
diff --git a/OnTopReplica/StartupOptions/Factory.cs b/OnTopReplica/StartupOptions/Factory.cs
index 8676f19..8602911 100644
--- a/OnTopReplica/StartupOptions/Factory.cs
+++ b/OnTopReplica/StartupOptions/Factory.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Text;
 using System.Drawing;
 using System.ComponentModel;
diff --git a/OnTopReplica/StartupOptions/Options.cs b/OnTopReplica/StartupOptions/Options.cs
index f596c83..1980a42 100644
--- a/OnTopReplica/StartupOptions/Options.cs
+++ b/OnTopReplica/StartupOptions/Options.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Text;
 using System.Drawing;
 using System.IO;
diff --git a/OnTopReplica/Tuples.cs b/OnTopReplica/Tuples.cs
deleted file mode 100644
index d504364..0000000
--- a/OnTopReplica/Tuples.cs
+++ /dev/null
@@ -1,20 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace OnTopReplica {
-    
-    public class Tuple<T1, T2> {
-
-        public Tuple(T1 item1, T2 item2) {
-            Item1 = item1;
-            Item2 = item2;
-        }
-
-        public T1 Item1 { get; set; }
-
-        public T2 Item2 { get; set; }
-
-    }
-
-}