They are currently in a nationwide outage for all business and residential services. They are working on restoring service but have no current ETA. You can follow updates on their twitter »twitter.com/knology
I'm in Columbus, GA and we use them at our office and at home, our IT department contacted them and informed me of this.
edit: they just released a statement on their facebook page: »www.facebook.com/knologyinc/post ··· 35613648