Actually, it is not the code behind. I removed all that last year. Basically, all .aspx page have only one call in the Page_Load() event, which is to instantiate a class and call a method in it.

Here is an example:

<script runat="server">
    Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim loShowHeader As ShowHeaderStore = New ShowHeaderStore(oProcess)
        loShowHeader.ShowHeader()
    End Sub
</script>

So, basically, as it doesn't even go there, when it freezes, it cannot be a factor.