I have been using Mac systems for a while now but have never faced such a problem with it before. I have a Mac mini which is installed with Mac OS X Snow leopard on it. The Mac mini was running on MAC OS X 10.4 before the upgradation. I have a linksys wireless router through which I used to access Internet on my Mac mini but after the operating system upgrade I Cant establish wireless connectivity in Mac mini. It shows that the Wireless network is connected but I am not able to surf. As I am not a networking person, I am not able to solve the problem. Therefore any solutions/suggestions are more than welcome. Thanks in advance.