MouseUp event not firing on ActivityDesigner class?

hi all,

we are having some weird issues with URL Routing in ASP.NET 3.5. 

We have a search box that does a search and redirects to a routed URL.

 When we search for the first time (aka Press a button that forces a postback) everythign works as expected.  we get:

1. BeginRequest event.

2. Determines Route

3. Calls Routehandler to match the route item to the actual destination page

4. Routes the url appropriately.

After you do one search successfully and try again it fails to call the BeginRequest event.  Because of this the routing data never gets called and so the url is never routed to its correct destination.   What is weirder still if we append a "/" (trailing slash) to the url after the initial postback it DOES work properly again. 

So our search route looks like this

mydomain.com/Search 

entering a term and pressing the SEARCH button would yield a result url like this:

mydomain.com/Search/Results/MySearchTerm

-----------------------------------------------------------------

Going back (after 1 successful search) you then need to use this url or else BeginRequest will never fire:

mydomain.com/Search/ < (note the extra "/" at the end)

Anyone have an idea a

        protected override void CreateChildControls(EventArgs e)
        {

            _userControl = Page.LoadControl(@"/_controltemplates/ControlTemplates/CustomUserControl.ascx");
            _userControl.ID = "usrSearchResults";

            this.Controls.Add(_userControl);
        }

    <asp:DropDownList ID="ddlRegions" AutoPostBack="true" runat="server" DataTextField="Title"
        DataValueField="Title" EnableViewState="true">
    </asp:DropDownList

ddlRegions.DataBound += new EventHandler(ddlRegions_DataBound);

hii.. i wrote the following code to perfrom the inline deletion of datagrid elements.

protected void GridView1_RowDeleted(object sender, GridViewDeletedEventArgs e)
    {
        Response.Write(" Sucessfully deleted");
    }

    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {

        string cmdString = // some command

        using (SqlConnection sqlCon = new SqlConnection(conString))
        {
            sqlCon.Open();
            SqlCommand sqlCmd = new SqlCommand(cmdString, sqlCon);
            SqlTransaction sqlTrans = sqlCon.BeginTransaction();
            sqlCmd.Transaction = sqlTrans;
            try
            {
                sqlCmd.ExecuteNonQuery();
                sqlTrans.Commit();
                sqlCon.Close();
            }
            catch (Exception ex)
            {
                Console.WriteLine("error is: ", ex.Message);
                try
                {
                    sqlTrans.Rollback();
                }
                catch (Exception ex2)
                {
                    Console.WriteLine("error is: ", ex2.Message);
                }
            }
        }
        Response.Write("deleted");
    }

the row deleted event is not firing and the row deleting event is firing twice. why is is