AT&T Co shares have been in the doghouse almost from the moment of deregulation and break-up of the Bell System, but some analysts are beginning to make perky noises about the shares on the basis that they believe the firm has finally got costs at its runaway disaster, AT&T Information Systems, under control: AT&T carefully hides the losses that the unit generates, but they are generally believed to have been around $1,000m last year; now however, AT&T says it has got costs under control in the business, and some are prepared to believe that the unit will break even this year.