Webbrowser Control Issues

I originally posted the following question but received no responses.

"I have a VS 2005 VB windows application that uses the WebBrowser control to display text, graphics and hyperlinks. The hyperlinks are used to open a modal windows form for displaying the definition of the hyperlinked word displayed in the control. In the Navigating event I test the url.absolutepath property in order to determine the correct definition to display. This application is deployed through one-click deployment. The problem lies in that the hyperlinks work on some machines but not all. I'm not sure if this is an IE related issue, a security issue with IE or exactly what the problem could be. Any help would be greatly appreciated. Thanks"

Since then I have discovered that when running this application on machines running IE7 the absolutepath property is as it should be. However, when running the application on machines using IE6 the absolutepath property contains my expected value plus the word "blank" concatenated to the front of it.
Ex: IE7 - e.url.absolutepath = "Alleles"   IE6 - e.url.absolutepath = "blankAlleles"

I have placed a workaround in the code that tests for and ultimately strips off the word "blank" but it shouldn't have to be done this way. Does anyone have any ideas why this happens and if I'm going to have problems with other versions of IE. This is a CBT application that is being distributed through hospitals so it is imperative that it works correctly.

Thanks in advance
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'Sample code from main form
      Private Sub WebBrowser1_Navigating(ByVal sender As Object, ByVal e As System.Windows.Forms.WebBrowserNavigatingEventArgs) Handles WebBrowser1.Navigating
      If e.Url.AbsolutePath = "blank" Then Exit Sub
 
      Dim frmDef As New frmDefinitions
      frmDef.GlossaryWord = e.Url.AbsolutePath
      frmDef.ShowDialog()
      e.Cancel = True
   End Sub
 
'Sample code from Definitions form
   Public GlossaryWord As String
   Private Sub frmDefinitions_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
      'TODO: This line of code loads data into the 'AntitrypsinDeficiencyDataSet.tblGlossary' table. You can move, or remove it, as needed.
      Me.TblGlossaryTableAdapter.Fill(Me.AntitrypsinDeficiencyDataSet.tblGlossary)
 
      Dim dvGlossary As New DataView
      Dim findWord As Int16
 
      dvGlossary.Table = Me.AntitrypsinDeficiencyDataSet.tblGlossary
      dvGlossary.Sort = "hyperlink"
 
      MsgBox("Hyperlink = " & GlossaryWord)
      findWord = dvGlossary.Find(GlossaryWord)
      If findWord = -1 Then
         MsgBox("Dataset damaged - definition could not be located.")
         Exit Sub
      End If
      lblWord.Text = dvGlossary.Item(findWord).Item("Term")
      lblDefinition.Text = dvGlossary.Item(findWord).Item("Definition")
 
      Me.FormBorderStyle = Windows.Forms.FormBorderStyle.FixedToolWindow
   End Sub