I just switch from talktalk to sky, it's strange that I couldn't connect to internet by Wifi on my Macbook Pro (Mac OS 10.6.8), the Wifi signal is good, and all my PCs and mobiles are fine with that. The problem seems to be TCP/IP settings, it doesn't work with manual static IP address, after resetting to DHCP, let sky router dynamically distribute IP address, it clear the problem.