if you have an active wifi connection, the rss feeds will update and things like connection keep-alive packets will be sent, so the unit is active and connected. if you want the most of your standby time, put the device into offline mode before you put it into standby mode. another option, when you are not near a configured wifi access point, is to turn off the search feature for the wifi. this will stop it from searching for access points to connect to. again the offline mode will accomplish this, but you also loose the bluetooth connections with offline mode.