By Jim Karpen
AT&T's network has been in the news lately, with a lot of iPhone users venting about the quality of service. Of course, it depends on where you live. On Tuesday, CNet writer Elinor Mills posted an article about her problems with AT&T service on her iPhone in San Francisco. That set off a firestorm of comments from iPhone users around the country. Today she posted a followup article, summarizing the comments and listing the dozens of locations that people complained about.