Australian telecommunications giant\u00a0Telstra is struggling\u00a0to successfully upgrade its IT infrastructure and migrate customers from its CDMA network to its Next G network, according to a story that appeared yesterday in The Australian. "Work on Telstra\u2019s billing and customer service systems has been in progress for at least five years. At $300 million, the Accenture-led initiative is the largest IT project on Telstra\u2019s books," The Australian reports.Critics say the problems with the two related initiatives stem from a number of areas, including cronyism at the highest levels of the company, stodgy middle managers and high turnover in the CIO\u2019s office.\u00a0Last week, Fiona Balfour abruptly resigned from the CIO post at Telstra after only 10 months on the job. Telstra had recruited\u00a0Balfour from Qantas\u00a0in 2006 to oversee the company\u2019s big IT transformation. The Australian article indicates that Balfour\u2019s frustration with middle management may have led to her premature departure.Check out our CIO News Alerts and Tech Informer pages for more updated news coverage.