I have a network with an AirPort (graphite) basestation and an AirPort Express in client mode for airtunes. it was working fine until yesterday when my dsl went down for a few hours and now the whole thing is whacked. While the grpahite base station is connected to the internet, and visible in the airport menu, it is not visible in either the airport setup assistant or in the admin utility. meanwhile, the express while it is visible in the admin utility and in itunes, will not join the network. ive reset/restarted/reconfigured several times. still, no. flashing yellow light. i did upgrade the firmware on the express and am thinking there might be some compatibility issue with the graphite firmware, but since i cant see or access it, i cant tell for sure. any ideas??