For the three months ended September 30, 2012, one customer represented 27% of net revenue, and for the three months ended September 30, 2011, one customer represented 32% of net revenue. 

For the six months ended September 30, 2012, one customer represented 28% of net revenue, and for the six months ended September 30, 2011, one customer represented 26% of net revenue.

At September 30, 2012, one customer represented 11%, one customer represented 13%, and one customer represented 16% of the net accounts receivable balance. At March 31, 2012, one customer represented 13% and two customers each, respectively, represented 12% of the net accounts receivable balance.