I can't load websites but I can ftp and play spotify, how can this be?
Hi the problem is with your DNS settings the Mac you are using cannot resolve the request into an IP address.  If you look at the other Macs in your house you should copy down the settings and opens System Preferences, Network and compare the settings. If your mac is set for DHCP then your router is not passing on the DNS settings of your ISP, or if it is the same as the Router then the Router cannot act as a DNS server, choose the DNS IP of your ISP that is sure to work.