Using Handcent, when I receive a MMS (text and picture) I only get the header if connected to WiFi. When I click the download button either the download does not take place or I get a message saying download could not proceed. If I turn off WiFi the MMS downloads immediately via 3g. Also, when downloading an app from Market, often the download will not occur until I switch the WiFi off then back on again but this does not occur all the time, sometimes the download proceeds normally. Any suggestions?