Related Party Transactions (Tables)

6 Months Ended

Jul. 31, 2011

Revenue Recognized from Related Party

Certain members of our Board of Directors also serve on the board of directors of certain of our customers. Management believes the transactions between these customers and us were carried out on an arm’s-length basis. The following table shows revenue recognized from these customers:

	Three months ended July 31,						Six months ended July 31,
	2011			2010			2011			2010
Revenue from customers	$	7,005		$	7,264		$	24,311		$	19,895
Percentage of total revenue		3.3	%		3.9	%		5.5	%		5.4	%