| TCS has been hit by two large contract cancellations from Wall Street banks, due to start this quarter, in the latest sign that the sub-prime crisis is weighing on the world economy. Though TCS did not say which customers were affected, but it is thought that they are Citibank and Merrill Lynch. The two U.S. banks have taken a hit of more than $40 billion between them in the wake of the sub-prime crisis and could yet announce more writedowns
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