Recently they are having problems in the NY area. For the past three weeks my connection has been unavaliable at least three times a day for long periods of time, mostly explained. Tech support doesn't know anything.
I've had their service for more then three years now - it's usually VERY fast and stable and I'd swear by it, but last month or so has been crap and their site gives this every other day:
Road Runner will be conducting Planned Maintenance on the IP network. Subscribers in the affected area(s) may have no connection to the Internet or latency/slow connectivity during this maintenance window. Our engineers are working quickly to complete this maintenance. We apologize for any inconvenience this may cause.