Rick in Chicago wrote to us this morning to let us know that he hasn’t been able to access AT&T’s 3G network all day. So far, AT&T has told him nothing, nor have they made an announcement: “text messaging still seems to work, so they could send out a text message to let people know ,” he IMs us. He got confirmation that it was the network and not his company-issued phone from his company’s tech department. This blog says it’s 3G and Edge, while this blog says its UMTS that’s down and disabling Treos and Blackberries.