US Cable Support > Cox HSI > [AZ] Speed Increase 01/31/13

I live on Gilbert and Southern in Mesa Arizona

Ive done about 4 speed tests today here is what I see:

I have had the Motorola 6120 for over a year I used to often see speed of over 2 MBp/s but not for a long time. Any thoughts on what I should do?
Signals:
»www.dropbox.com/s/age4xxur4dpjm2···0631.png
SpeedTest:
»www.speedtest.net/result/2553692372.png