What's happened at apple? Why don't the simple things just work anymore? So, long story short, i already have the new style Time Capsule so i decided to make it my primary router rather than just use it for the backup device capabilities and as well as wanting to extend the WiFi at the far side of the house with an AE. Both devices are running the same version (7.7.3). TC set up and is working fine, both the wireless and ethernet connections are fine, my devices can talk to each other and the internet. All good at this point, I have a working WiFi. Plug in the AE, (AE is hard cabled over CAT6 to the TC) select extend the network, select the name of the network to join from the drop down, type in the password etc and the AE joins to the TC successfully no issues. Again at this stage everything is fine. I can talk to the internet either wirelessly or via cable. Within 5-6mins of the connection being made, the internet speed will start to decline and then both the TC and AE will start to flash yellow and all connections to everything is lost. Wireless will then go offline (i.e. it the mac/phone/ATV/iPad - anything) cant see the wireless signal anymore and nothing works. I've tried pre-selecting the 5ghz channel, I'm not wanting to split 2.4 and 5Ghz to two SSIDs, but i tried that, still too, zip. Same problem. Ive tried both DHCP for the ip and STATIC on the AE, still does the same. Guest network is disabled on both devices so it's not that common issue. NAT port mapping on/off no differences. I can get the AE to work totally fine and be stable IF it's put into bridge mode and has its own separate WiFI name - which is pointless and not what i want (this is what i had before and why i bought the AE to start with). I've fully reset the AE about a dozen times, i don't want to reset the TC as it would destroy the backups. Anything else before i just return it and give in...??