I haven’t change my DNS back to Charter’s servers but a post in this thread seems to indicate that the problem has been resolved.  http://www.dslreports.com/forum/r20199048-Charter-Google-Chicago~start=20

OpenDNS seems to be working well for me and I must might leave it set up for a few days to see if I continue to like it.

192.168.18.125
18.227.48.237