I purchased an airport express a while ago. After getting help to set it up through Apple, I started noticing that my internet connection would drop EVERY night between 8:30 p.m. and 10:00 p.m. - signal drops for anywhere from 5 min to 20 min several times. It appears to be okay during the day. I am an ATT user with their modem, a speed stream 5100. The power, ethernet, and dsl light say lit with the internet light flashing. After having this problem for about a month, I called ATT who sent out a technician. He said all was fine. It happened again the same evening. This was in mid-December. I purchase a time capsule as I decided the express may be faulty and didn't have time to return to an apple store. I am having the same problems. Internet fine during the day and drops in the evening. Could my modem be the problem? I have called ATT again as well as Apple and they all think it is hooked up correctly. If modem is bad, what should I buy to work with the time capsule?