diff --git a/Builder/IISMainHandler/build.txt b/Builder/IISMainHandler/build.txt
index 398d2f0..bc4e1dc 100644
--- a/Builder/IISMainHandler/build.txt
+++ b/Builder/IISMainHandler/build.txt
@@ -1 +1 @@
-1965
\ No newline at end of file
+1968
\ No newline at end of file
diff --git a/FLocal.Common/Config.cs b/FLocal.Common/Config.cs
index 1501da5..e7aa243 100644
--- a/FLocal.Common/Config.cs
+++ b/FLocal.Common/Config.cs
@@ -4,6 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Collections.Specialized;
 using Web.Core;
+using System.IO;
 
 namespace FLocal.Common {
 
@@ -49,6 +50,8 @@ namespace FLocal.Common {
 		public readonly string DefaultLegacySkin;
 		public readonly string DefaultMachichara;
 
+		public readonly ILogger Logger;
+
 		protected Config(NameValueCollection data) : base(data) {
 			this.InitTime = DateTime.Now.ToLongTimeString();
 			this.mainConnection = new MySQLConnector.Connection(data["ConnectionString"], MySQLConnector.PostgresDBTraits.instance);
@@ -71,15 +74,16 @@ namespace FLocal.Common {
 			this.DefaultLegacySkin = data["DefaultLegacySkin"];
 			this.DefaultModernSkin = data["DefaultModernSkin"];
 			this.DefaultMachichara = data["DefaultMachichara"];
+			this.Logger = new SingleFileLogger(this);
 		}
 
 		public static void Init(NameValueCollection data) {
 			doInit(() => new Config(data));
 		}
 
-		public static void ReInit(NameValueCollection data) {
+		/*public static void ReInit(NameValueCollection data) {
 			doReInit(() => new Config(data));
-		}
+		}*/
 
 		public override void Dispose() {
 			this.mainConnection.Dispose();
@@ -102,6 +106,25 @@ namespace FLocal.Common {
 			}
 		}
 
+		private class SingleFileLogger : ILogger {
+
+			private readonly StreamWriter writer;
+
+			private readonly object locker = new object();
+
+			public SingleFileLogger(Config config) {
+				this.writer = new StreamWriter(config.dataDir + "Logs\\" + DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss") + ".mainlog.txt");
+			}
+
+			void ILogger.Log(string message) {
+				lock(this.locker) {
+					this.writer.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ffffff") + ": " + message);
+					this.writer.Flush();
+				}
+			}
+
+		}
+
 	}
 
 }
diff --git a/FLocal.IISHandler/MainHandler.cs b/FLocal.IISHandler/MainHandler.cs
index 3b4989a..f3a53fe 100644
--- a/FLocal.IISHandler/MainHandler.cs
+++ b/FLocal.IISHandler/MainHandler.cs
@@ -4,19 +4,20 @@ using System.Linq;
 using System.Text;
 using System.Web;
 using System.Configuration;
+using Web.Core;
 using FLocal.Common;
 
 namespace FLocal.IISHandler {
 	public class MainHandler : IHttpHandler {
 
+		private static readonly Counter counter = new Counter();
+
 		public bool IsReusable {
 			get { return true; }
 		}
 
 		private void doProcessRequest(HttpContext httpcontext) {
 
-			Initializer.instance.Initialize();
-
 			Uri current = httpcontext.Request.Url;
 			if(!current.Host.EndsWith(Config.instance.BaseHost)) {
 				throw new Web.Core.FLocalException("Wrong host: " + current.Host + " (expected *" + Config.instance.BaseHost + ")");
@@ -40,9 +41,16 @@ namespace FLocal.IISHandler {
 		}
 
 		public void ProcessRequest(HttpContext context) {
+			Initializer.instance.Initialize();
+
+			DateTime start = DateTime.Now;
+			int requestNumber = counter.GetCurrentValueAndIncrement();
 			try {
+				Config.instance.Logger.Log("Began serving request #" + requestNumber + ": " + context.Request.Url.AbsoluteUri);
 				this.doProcessRequest(context);
+				Config.instance.Logger.Log("Done serving request #" + requestNumber + "; " + (DateTime.Now-start).TotalSeconds + " seconds spent");
 			} catch(RedirectException e) {
+				Config.instance.Logger.Log("Done serving request #" + requestNumber + "; " + (DateTime.Now-start).TotalSeconds + " seconds spent (redirected)");
 				context.Response.Redirect(e.newUrl);
 			}
 		}
diff --git a/Web.Core/Web.Core.csproj b/Web.Core/Web.Core.csproj
index adae440..8c5ef31 100644
--- a/Web.Core/Web.Core.csproj
+++ b/Web.Core/Web.Core.csproj
@@ -47,6 +47,7 @@
   <ItemGroup>
     <Compile Include="Cache.cs" />
     <Compile Include="Config.cs" />
+    <Compile Include="Counter.cs" />
     <Compile Include="DataObject.cs" />
     <Compile Include="DB\conditions\AbstractCondition.cs" />
     <Compile Include="DB\ColumnOrValue.cs" />
@@ -79,6 +80,7 @@
     <Compile Include="extensions\Extensions.cs" />
     <Compile Include="extensions\String.cs" />
     <Compile Include="IDataObject.cs" />
+    <Compile Include="ILogger.cs" />
     <Compile Include="Network\IPv4.cs" />
     <Compile Include="Network\IPv4Subnet.cs" />
     <Compile Include="Network\IPv4Address.cs" />