Issue with Macbook Pro 2011

Hi there. I have a brand new MacBook Pro 2011 and I'm having some problems with my wireless connection. I have in the same room a Mac Mini, my Ipad , my Ipod, 3 PC's and all of them have a wireless connection. I notice that since my last MacOSX update I have some problems with my wireless connectivity in my Macmini. Now I'm having the same problem in my macbook pro. I have internet in all my other devices but no internet in my Mac Mini or Macbook. The Access point is 5 meters away from my devices. I put some repeater in the middle to repeat the signal but I'm getting the same beavior. Can someone help me on this? If I go to the network setting and renew my DHCP address I can access the internet but after 15 minutes I'm getting the same problem again.

The signal bar on the menubar is not always an accurate indicator of how strong the signal is.  A more accurate measure is if the signal drops entirely and you are definitely in range of the airport base station.  Also anywhere within 3 meters you may get signal degradation because of overlapping radio waves cancelling each other out.  You also have the option to ask to speak to a customer relations person when you call AppleCare, and ask for an expedited repair, and have your airport card properly seated.  Sometimes they can get loose, or the antenna can get loose inside, though normally this isn't a problem unless the machine has to be opened for some reason.

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      Reset PRAM.   http://support.apple.com/kb/PH18761
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    http://support.apple.com/kb/TS1713
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    Thought of buying Parallels? Fusion?
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