Here. "With current versions of Outlook, losing a network connection or working with a slow or unreliable network connection produces horrible results. If Outlook loses its network connectivity, error messages pop up before Outlook freezes completely. Outlook 11 eliminates this problem. Details have not been fully released, but Outlook 11 will work in what is termed "cached Exchange mode." When a fat pipe (a high-speed network connection) is present, Outlook will run much like it does now, where headers and message bodies will be downloaded as new messages arrive. When Outlook detects a slower pipe, either a dial-up or a cellular modem connection, only message headers will be downloaded. If a user wants to display a message, the entire message body will then be downloaded from the server. Outlook's default behavior will be to work against its local cache."
Now this sounds more like it!