Should I be Comcastic?

Once again, I'm having problems with my unreliable Comcast Internet service. I'm now experiencing frequent intervals of high packet loss. The problem has gotten bad enough that I wrote a cron script to monitor packet loss at five minute intervals. The script calculates the packet loss to the local cable modem hub. As you can see from the graph (which shows the last day), there are periods of complete network failure. I have a suspicion that there is a loose connector somewhere in the local cable plant, because the problems started to occur when the weather got really cold. Unfortunately, since it's an intermittent problem, I'm going to have to call Comcast technical support when it's completely down. Needless to say, I'm not thrilled about having to deal with the technical support staff yet again.