Guys, enough with posts about networkmap clients showing as wired.  Please, do a 
forum search, and do some thread reading before posting in that very thread.  This must be the THIRD post about this today alone, on top of probably a dozen similar posts in the past few weeks about this very point.  Forums aren't just for posting, people need to also take the time to read a bit.
I'm tired of repeating the same answers over and over.  I will be ignoring any future posts about this, or the wireless reports from people who didn't do the basic troubleshooting steps previously posted.  There's no reason why a firmware version that works for the majority of people would be broken for a few specific persons in regard to wireless.  Wireless is as much about your CLIENTS as it is about your router.  There hasn't been any major wifi-related change in nearly a year now.  The used driver in nearly all models has been the same version since last year.
Do your homework.  There's even a 
sticky about basic things to do when dealing with wifi issues.