IPhone 4s 5.0.1 will no longer connect to wifi

Updated to iOS 5.0.1 and now my 4s will no longer connect to wifi.  iOS 5.0 worked perfectly.  Now the phone tries to connect to wifi but fails every time and the battery drains faster than water from an unstopped sink. My guess is that the battery drain is due to the phone trying to connect to wifi.  I have done all the usual things.  My phone is 4 ft from my router (and it worked perfectly under iOS 5.0).  I have restored the phone on iTunes with no change.  I would love to go back to iOS 5.0.

Just checked my wife's iPhone 4.  Did an over the air update to 5.0.1 and apparently that killed the wifi on that phone as well.  My iPad 1 and iPod Touch works fine.

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