Odd problem, Apple seems unable/unwilling to help. Bought an Airport Extreme a few weeks ago. Does the wireless thing nicely with good speed, shares a printer and an external HDD. All peachy. One glitch, though: my wife and I have matching MacBooks. I can be surfing along just fine, until she decides to turn on her MacBook and get online. When that happens, even though I'm still connected wirelessly to the Airport Extreme, my internet connection fails. If I go into Network Preferences and go through the "Assist Me..." dialog, my internet will work again... until my wife decides to load another page online, then I'm off again. My Airport Extreme is set up to allow DHCP and to share an IP address. The Apple Support folks on the phone said they don't understand the problem, because that is all they knew to do. I've also reset the Airport about a dozen times. I wonder if it's something wrong with my MacBook. I mean, I do generally use it around 15-16 hours per day (purchased in January), so could the Airport receiver have already crapped out or something? Her computer, lightly used maybe an hour a day, always connects to the web perfectly. Any help is appreciated!