Airport Express and MacBook Pro

Hi,
My MacBook Pro is about 2 years old or so. It has only been today when my MacBook stopped receiving wireless (my airport express is right under my laptop, under the desk). The airport signal bar in the upper right corner reads strong. However, when i open Safari 3.2.1, it refuses to load any page. I know my Airport Express works as I am using it on my iPhone.
Is there a solution to help my macbook pro recognize the Airport signal again? I've tried restarting / resetting my Airport Express and cycling my cable modem. None seem to be the solution.
I open to my Airport Admin Utility and there seems to be negative noise and signal for my laptop... is there a reason for this? Here's a screenie of it.. the top is my laptop while the second one is my iphone: http://twitpic.com/wyz2/full
thanks in advance!

Hi,
I'm having exactly the same problem. My iPhone is perfect but my Macbook receives the wifi conection intermitantly. It usally works for a few minutes then drops out completely. I used iStumbler to confirm the Express signal is constant. Also, to check that other WiFi connections in the area weren't interferring by changing the channel. But it has to be the Macbook which incidentally works absolutely fine on every other Wifi connection I've connected to.
Some little setting on the Express perhaps? Did you have any joy?

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