Airport Indicator Shows No Signal on MBP

Hi,
I'm using AirPort Extreme with my MBP and for some reason the little indicator on my screen shows no signal strength. When I right click on the indicator it says "AirPort Not Configured." However, I'm able to connect to the internet with no problem. Anyone know how to correct this problem?
I'm running the latest version of Leopard.
Many thanks!

Is this the adapter that you have to plug in an HDMI cable, as well, as a connection for your iPad's charge cable?
If yes, try plugging in your iPad's charger cable and power/charging block into power while having the cable connected up to your iPad. See if this works with your TV then,
If still no joy, try unplugging and replugging the connector at the iPad to see if this works.
If STILL no joy, leave the cables plugged in and do a hard reset of your iPad by holding down together the iPad's Home button and Sleep button until your iPad screen goes dark bad boots up with the Apple logo, then let go of the buttons.
Also, what video apps are you trying to watch from your iPad to the TV?

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