I installed last weekend no problems noticed. I was using wifi up until today I started using the ethernet. I could not log on to the internet. The light on the modem was not blinking but in the networking status everything was green except "internet" and "server". I called the ISP and they said everything was fine on there end could not figure out what it was so I knew what it was. I downgraded to Leopard and the internet is back. how to get in snow leopard?