AndyFel,
This isssue is not related to AjaxUploader. AjaxUploader can work in Ajax enviorment and non-Ajax enviroment.
In IE 5.5 and 6.0, if you disallow safe ActiveX, MicroSoft AJax will not work.
Please try the following code (it doesn't contain Ajax Uploader):
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void LinkButton1_Click(object sender, EventArgs e)
{
LinkButton1.Text = "You have clicked the button!";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Test</title>
<link rel="stylesheet" href="demo.css" type="text/css" />
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="Scriptmanager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" Text="LinkButton1" OnClick="LinkButton1_Click"></asp:LinkButton>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
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