prova con il codice (alla load)
Response.ExpiresAbsolute=Now()-2
Response.Expires = 0
Response.AddHeader "pragma", "no-cache"
Response.AddHeader "cache-control", "no-store, must-revalidate, private"
Response.CacheControl = "private"
Alx81 =)
http://blogs.dotnethell.it/suxstellino