help with path error

Hi all,
I'M HAVING THIS PROBLEM WITH MY WEBSITE, I DEPLOYED IT ON TO TE SERVER
AND ON THE SERVER IT WORKS WELL BUT WHEN i TRY TO INSERT DATA WHEN ON
CLIENT I GET THIS ERROR:
[COMException (0x80070035): The network path was not found]
System.DirectoryServices.DirectoryEntry.Bind(Boolean throwIfFail) +705
System.DirectoryServices.DirectoryEntry.Bind() +10
System.DirectoryServices.DirectoryEntry.get_AdsObject() +10
System.DirectoryServices.PropertyValueCollection.PopulateList() +234
System.DirectoryServices.PropertyValueCollection..ctor(DirectoryEntry
entry, String propertyName) +56
System.DirectoryServices.PropertyCollection.get_Item(String
propertyName) +97
Dash_Board.DashBoard.dgis_ItemCommand(Object source,
DataGridCommandEventArgs e) in c:\inetpub\wwwroot\dash_board
\dashboard.aspx.cs:156
System.Web.UI.WebControls.DataGrid.OnUpdateCommand(DataGridCommandEventArgs
e) +109
System.Web.UI.WebControls.DataGrid.OnBubbleEvent(Object source,
EventArgs e) +507
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args)
+26
System.Web.UI.WebControls.DataGridItem.OnBubbleEvent(Object source,
EventArgs e) +106
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args)
+26
System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e)
+121
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.Ra­isePostBackEvent(String
eventArgument) +115
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
+138
System.Web.UI.Page.ProcessRequestMain() +1292
I'm using windows authentication and I'm adding identity
impersonate="true".
And here is the behind code:

System.Web.UI.WebControls.TextBox st6=new
System.Web.UI.WebControls.TextBox();
st6=(System.Web.UI.WebControls.TextBox)e.Item.Cells[0].FindControl("txtname­");
SqlCommand myCommand=new
SqlCommand();myCommand.Connection=con;myCommand.CommandText="insert
into DashBoard (ObjectiveAchieved,Objective,MoodToday,Name) values
(@ObjectiveAchieved, @Objective,@MoodToday,@Name)";
myCommand.Parameters.Add(new SqlParameter("@Name",SqlDbType.Text));
string
DomainUser=System.Security.Principal.WindowsIdentity.GetCurrent().Name.Repl­ace("\
\","/");
System.DirectoryServices.DirectoryEntry ADEntry = new
System.DirectoryServices.DirectoryEntry("WinNT://"+DomainUser);
myCommand.Parameters["@Name"].Value=st6.Text=(ADEntry.Properties["FullName"­].Value.ToString());

Where could I be going wrong?
Thanks