To make a long story short... Is this object being closed properly? I'm having some problems with my site and my host want's to blame it on my code, not their server... imagine that 

Code:
set xml = Server.CreateObject("Microsoft.XMLHTTP")
xml.open "POST", "https://secure.authorize.net/gateway/transact.dll?" _
& PostData & "", false
xml.send ""
strStatus = xml.Status
strRetval = xml.responseText
set xml = nothing