Macintosh Laptops

Can you help with my problem with my Macbook and AT&T wireless internet?

I have a Macbook and I used to have Comcast internet service and the wireless internet worked well. I've recently switched to AT&T U-verse. I'm having tons of problems with the wireless internet. It doesn't seem to work very well. When a page is taking a while to load, I click on the antenna for the airport and the page suddenly loads fast. Most of the time though, I can't even get internet. I'll have to keep turning my airport off then back on. The internet will be there for a while and all of sudden it stops working. Can anyone tell me what the problem is and how i can fix this???

(my boyfriend is a comp. eng. and he's looked at it a lot and he can't seem to find the problem. i have no idea why it's not working well. his computer is actually plugged in and the internet works fine. it's just my computer and the wireless internet.)

Delete the network preferences and reset them. Or try something from here.

http://www.macfixit.com/article.php?story=2005093011343164

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