I've been having some issues with one of my Airport Express units, the one the modem's connected to. I've been on the phone with Apple a few times, and have had my MacBook (brand new) checked out for antenna issues by a Genius. All is well. I've tried resets of all sorts on the Express, and what happens is that in the mornings the main Express is blinking yellow. This morning nothing--not any kind of reset--would change that. Big question: is it time for a new Express?