After a decent start earlier this year, IT hiring is slowing down. Despite a 203,000 increase in the overall number of jobs added to the U.S. economy in November, an analysis of hiring by two independent groups shows decreasing demand for IT pros. That trend has become apparent over the last several months.The first analysis, by TechServe Alliance, an industry group, reports that IT hiring expanded by 3,200 jobs in November, 3,100 jobs in October, and 6,100 jobs in September. Those numbers are well off the hiring gains posted earlier this year.