Hi everyone,

I would appreciate any help concerning this threading issue.
I am using the comm port, and receiving data from the comm port fine.
I am updating the system.form controls, text boxes, using "begininvoke" and
the updates occur, no problem.
However after the update,, the form is about as responsive as a herd of
turtles running through peanut butter.  What am I missing?
Here is the code:

GENERAL:
Public Class Form1
   Inherits System.Windows.Forms.Form
   Private Shared m_FormDefInstance As Form1
...
etc.

-------------------------------------------
Form1 Load event:
 m_FormDefInstance = Me
etc.
------------------------------------------

Comm port:----------------------------
Private Sub m_CommPort_DataReceived(ByVal sender As Object, _
         ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles
m_CommPort.DataReceived

       Dim strModemRecBuffer As String = ""
       strModemRecBuffer = m_CommPort.ReadExisting
       'Update MAINFORM Controls
       m_FormDefInstance.BeginInvoke(New _
         DisplayData(AddressOf ProcessCallerData), _
                 New Object() {strModemRecBuffer})
   End Sub
------------------------------------------------------------

   Public Delegate Sub DisplayData(ByVal strCallerIdDataBuffer As String)

   Private Sub ProcessCallerData(ByVal strCallerIdDataBuffer As String)
       'Update the text box with caller-id (Works fine)
       ' I do some formatting for the <Cr> in the caller-id fields, but
       'that is all working fine
       text1.text = strCallerIdDataBuffer
       text1.refresh
end sub

The caller-id data comes out fine, and then the form goes to slug mode.
Any help would be appreciated, thank-you in advance
Am I missing something with the thread?