I just made a fresh copy of OS on my laptop yesterday, and the first thing to do was configuring the router in order to access Internet. To my disappointed, I could connect to the Linksys router, which is a product from Cisco corp, but I can't access Internet.
The first point I thought was the wireless network card is retired. Fortunately, one wireless network of my neighborhood was covered and unsecured, so I connected to it. all was OK. that improved my network card works.
The thing else was my LinkSys router. I reset it ,and removed the auth ticket. OMG, it worked. then I just changed ticket to the one before, not work now.
I remained the ticket and changed the way of encrypt, wow, it worked again.
My god, it driven me mad.
LinkSys , bad.
