Past; Cable modem to a NetGear router, router to the Airport. Router to the Mac Pro, worked fine. Present; exchanged my old cable modem for a new one, cable tech insisted that the cable modem go directly into the Airport, Airport directly to the Mac Pro, Airport to the NetGear router. (NetGear router is also new Gigabit model) Apple tech insists above set up is correct. Airport has updated software, and was reset. Resulting in verrrrrry sloooow internet. Pages load on average in 15 seconds. The Cable modem is good when directly connected to the Mac Pro everything is fast. Help?