Hi there, My AEBS is on the second floor of my house and the signal in the basement is very low. I am trying to use an Airport Express to extend the range of my network. I have the latest hardware revision and the latest firmware for both devices. I select 'Allow this network to be extended' on the AEBS configuration, and 'Extend a network' on the Airport Express configuration. Once I make this change, the whole network becomes extremely unreliable and the signal strength in the basement is no better. For example, after I turn this configuration on I will find that the speed of the wireless network will fluctuate rapidly from fast (15mbps) to non-existent (0mbps), even when sitting right next to the AEBS. In parts of the house that would previously get 500kbps, I will get 5kbps. So in addition to not extending the range of the network, it makes the entire network completely unstable, even close to the main AEBS. When I turn off this configuration everything works fine again. I searched around online and I've found plenty of posts from people talking about how this feature SHOULD work, but no one actually stating that they've gotten it working successfully. So my question is - has anyone actually used an Airport Express to extend the range of their network, and how has it worked out for you? Also, I read one post that suggested a better configuration is to use a second AEBS to extend the first AEBS. Has anyone tried this? Thanks!