Do unused usings in .net affect performance?

Possible Duplicate:
Why should you remove unnecessary C# using directives?
How is performance affected by an unused using statement

Do unused usings in c# affect runtime performance? If yes, How do so?

using System;
using System.Collections.Generic;
using System.ComponentModel; -----//Unused
using System.Data;---------------//Unused
using System.Drawing;-----------//Unused
using System.Text;-------------//Unused
using System.Windows.Forms;
using System.Threading;------//Unused
using System.Linq;----------//Unused
using System.IO;-----------//Unused
using System.Diagnostics;-//Unused
using System.Data.OleDb;
using OBID;