It's easy to build your own UpdateProgress panel, just by using the core ASP.NET Ajax extentions beta 1
(this example is taken from the ASP.NET Ajax documentation on page http://ajax.asp.net/docs/ClientReference/Sys.WebForms/PageRequestManagerClass.aspx)
Assuming you have a scriptmanager on your page, an updatepanel and an html DIV-element (named 'myUpdatePanel' with style='visibility:hidden;'). 'myUpdatePanel' contains the text/image you want to show when the UpdatePanel is waiting to update itself.
<script type="text/javascript" language="javascript">
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler)
function BeginRequestHandler(sender, args)
{
ActivateAlertDiv('visible', 'myUpdatePanel');
} function EndRequestHandler(sender, args)
{
ActivateAlertDiv('hidden', 'myUpdatePanel');
} function ActivateAlertDiv(visstring, elem)
{
var adiv = $get(elem);
adiv.style.visibility = visstring;
}
</script>