I've been trying to fix this for hours and still no joy.

My MacMini will not connect to the internet server. It finds the Wifi, asks for the password and even connects to the network. (which is working on my laptop, ipad... etc)

I've tried changing the channel on my Sky D-link router, and the password/wifi name. It is currently using WPA2 on an ADSL?? I deleted the Wifi from my keychain and network preferences and started fresh...Still nothing. My next logical step would be to try a software update, but this would mean moving everything right accross the house in order to use an ethernet cable, which I'm not sure would work.

Any suggestions greatly appreciated,