Hey gang. for some reason my aex disappears to my mbp. if i open airport utility it won't show up. i didn't used to have this issue but its been bad lately. I am borrowing the neighbors internet wirelessly at this point (with permission)but use the aex for airtunes. last night after being really irritated i reset it and set it up again. it seemed fine and used it for 2 hours or so. today however its not there. it shows the green light but my mbp doesn't see it. whats up?