Just tried the compatibility mode, and nope, it did nothing. When you update the port forwards, and it says that the settings have been saved, and it starts counting down, the router should restart, right?
I don't believe it is doing that. The icons on the front of the router look unchanged. When my Playstation 3 is on while doing it, it doesn't sign me out. Not sure if it is supposed to restart or not, but my old d-link router would whenever it did that countdown.
Also, this router is brand new, out of the box. I bought it about a week ago and haven't touched any firmware or any of the settings on the admin page.