Since the update, my Galaxy S Epic will no longer receive data from or send data to any WiFi network, including networks that worked perfectly until the 2.2.1 update was installed. How common is this glitch? Is there a known fix?
UPDATE: At Samsung's suggestion (800-SAMSUNG), the Google browser was reset by opening the Browser ( the Browser widget has been renamed "Internet") and tapping Menu => More => Settings => Reset to Default. This appears to have restored most improved WiFi connectivity.