Craigslist and Time Warner

Anybody else having problems with Craigslist that has Roadrunner? It seems every weekend I can't get this website. Time Warner blames Craigslist for blocking the site from roadrunner. I can't see that when it seems to work fine all week long and then stops working every weekend. Doesn't make much sense for Craigslist to block a huge amount of customers for no reason. Never had issues until the last month or so.