Static IP address repeatedly routed through the wrong network

For the past two Friday nights, our connection has gone down, and on each occation it was due to our static IP ending up being routed through the wrong network.

This is not acceptable and needs to be fixed asap, including the systemic error that apparently is happening each Friday.

More details in the old thread - http://forums.businesshelp.comcast.com/t5/Connectivity/Bad-routing-table-on-be-11-cr01-sanjose-ca-ibone-comcast-net-68/m-p/17420