Very strange and very frustrating WiFI issue with U460 Ideapad.

I have been very happy with my U460 up until this point.  A very good value I thought.  
Problem:
Unit running well.  One day my wife complains that the wifi is dropping on her.  We reset the router and it seemingly went right back to normal operation.
This continued however, not more than 10 minutes later.  I took a look at it and diagnosed it as a wifi router issue.  I called my isp and they reccomended I started cycling the channels used on the router to avoid any interference.  So I did that.
Absoulutely no improvement.  About that time I brought other machines into the mix and they would have no issue at all while the u460 would drop the connection periodically.
So I called Lenovo and they had me remove some bloatware from the computer, I forget the name of the program.  They also had me reinstall the drivers for the wifi.  This did nothing, but I gave it a day or two to let it work itself out.
Next thing was to flash the hard drive completely.  This did nothing.  In fact, this made the situation somewhat worse for some reason, but it is hard to really quantify what is "worse".  They then sent a box for me to return the machine.
Return 1: From all I can tell they just flashed the hard drive again and put it back in the box.  The notes said they saw this issue I saw.
I almost immediately call them up again and they send me a RMR number to send the u460 back
Return 2: Replaced WIFI adaptor and flashed hard drive.  Again they note on the RMR that they saw this issue.
This has had no improvement whatsoever.  
Further debug steps:
I note that the closer I am to the router the longer the wifi will stay connected, but it will drop out eventually
Ethernet is totally ok.  Bluetooth is OK
Seems to disconnect on other wifi access points other than my own.
I am worried to send this back again. I have a lot of consumer electronics experience as I work in support for a major technology firm.  To me I have absolutely no idea what the heck is going on. I think the software is clean, and I can't even imagine what the hardware issue would be.  From browsing this forum this problem is nearly completely unique except insofar as removing the bloatware which pertains to the wifi.  
Any help would be appreciated before I call Lenovo again to send the machine back.  The next option is just EBAY as a broken item to recoup some of the cost.

http://forum.lenovo.com/t5/IdeaPad-Y-U-B-V-and-Z-series/Y560-keeps-dropping-wifi/m-p/316715#M29893

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