I had the same problem and decided to buy another airport extreme. I've installed the first one at the ground floor as a base station. The second one is upstairs in my 'office room' and i've got it hardwired with ethernet through the ceiling to the central connection point on the base station. This way I have 1gigabit speeds upstairs as well. Wired is always faster than wireless. This seemed the only solution for me since there are wooden floors with 'aluminum' isolation in all my house. This blocks the wireless signal from ground floor to the second floor. If you use a 'roaming network' setting with your airport utility, it becomes one big wireless network instead of 2 seperate ones. Good luck!