My neighborhood just got wired for fiber optic so I signed up for the 10mb service. It is noticeably slower than my 10mb cable. I ran some tests on Speedtest.net and with cable Im getting 29mbs upload and 6mbs downstream but with the fiber optic I only average 6.7 up and less than 1 down, sometimes the test wont complete. The service guy came out yesterday and said all my phone lines are fine. This is my first time setting up DSL but all the modem settings seem right. Luckily I havent cancelled the cable yet.