Not saying that the router can't handle basic configurations. Just trying to help you trouble shoot with little configuration as possible to find out if it could be HW, FW or setup related. Is wireless working well for you at this time? Both Beta 03 and 08 should be good for wired. Have you setup anything else for the 4500, give details if you can. I know everyone doesn't use all the features or need to. There's probably some things you can turn off. I would regress to Beta 03 FW, do a factory reset, Setup ur Wifi. Turn off WISH, WiFi protected setup, this is different from Encryption. If you don't game, those should be off already out of the box. I would disable all logging accept for Firewall, System and Critical. I might set Firewall settings to EndPoint Independent for both UDP and TCP. I would test each wireless modes, by themselves at first. See if there is a mode that works well by itself. Then try the mix modes. You'll only get N mode connection by using 5Ghz, Auto and AES. If you don't have a need for N mode, then I would use Mixed mode b/g at 2.4Ghz with WPA2 Personal and Auto Encryption. Some things to look at for you. Let us know. Hope this might help.