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If you haven't already, I'd suggest trying the wireless diagnostics on your MacBook Pro the next time your connection drops:
About Wireless Diagnostics
You may also want to check the settings on your Airport Extreme against the recommended wi-fi settings:
iOS and OS X: Recommended settings for Wi-Fi routers and access points
This exact same thing happened to me, word for word. I took it to Apple and they tested it out, sending thousands of pings to Google (whatever that means) and eventually realised that it was starting to drop its connection. So they replaced the Airport card I think, the actual hardware itself, and tested it again. Their second test showed it to not drop the connection. I am yet to pick it up again and test it out, but hopefully they really did fix it.
Hope that helps!
I put up with this on a 17 inch macbook pro for a couple of months. Sometimes it was 6 or 8 times a minute and other times I would go for a 1/2 day without a drop. 327 westel router. I got a new router. No problem until I had to update flash player. It would not work so I turned java (not java script) back on and bingo, the new router dropped me. Forth what it's worth, turn off java. We may have a virus through java or it may be a software problem. In either case, I don't like java and usually keep it off.
I am having an issue with my macbook pro purchased in Feb. 2013 and running the latest version of Mavericks (10.9.2) with random repeated dropped Wifi signal. Problem occurs with multiple WiFi routers and locations and other machine/devices in the same area connected to the same signal are unaffected. After two days of chat support (which cost me $19 each time, because I am traveling outside of the US) and lots of testing, including:
clearing out keychain passwords
clearing saved networks
setting priority on network ports
setting inactive on non wifi ports
deleting all files in /Library/Preferences/SystemConfiguration
seeing the problem with a new user
seeing the problem in safe mode
seeing the problem in the OS reinstall mode
It was determined that my problem was hardware related and needed to be serviced. Also, because I am traveling and will not be back in the US for several months this will be an out of pocket expense for me. I spoke with Customer Care and complained about the poor quality and the fact that this issue started so quickly after my 1 year warranty expired (less than a month), and while they offered to recover the costs of repair, if I could bring the machine back to the US, they could offer me nothing while I am traveling, even though the repair would be covered world-wide under apple care. I asked if they could apply apple care now, I even offered to buy it, to ensure that I would be covered while I am traveling, in case something else goes wrong (which I am fairly certain is bound to happen).
I am so unimpressed with the quality of apple's mac books as of late that I do not plan on buying apple products again. This is the second macbook pro that I've had in less than two years with hardware problems that I ended up having to pay to repair, both less than 2 years old. Apple had a chance to make things right for me by either offering to cover the machine under apple care, or at the VERY LEAST allowing me to purchase it now, but sadly these are not options and I am left with a very expensive laptop that is prone to hardware failures, and even more expensive to fix. Sorry to say, but after years of cheerleading apple products I think Im ready to start looking elsewhere.
I have the same problem. Mac keeps on dropping wifi. On the other hand Lenovo and HP which are also used at home have no problem.
Shame on Apple!!!
I am regretting my decision to go in for a MAC. The software (yes 10.9) is no patch on Windows 7 for ease of use. And now even the hardware.
And the most expensive laptop out there!!
I guess it is time to short Apple.