Exhibit 12.1

Ratio of Earnings to Fixed Charges

     Set forth below is information concerning our ratio of earnings to fixed charges on a consolidated basis for the periods indicated. This ratio shows the extent to which our business generates enough earnings after the payment of all expenses other than interest to make the required interest payments on our convertible senior subordinated notes.

     For purposes of computing the ratio of earnings to fixed charges, “earnings” consist of income before income taxes and fixed charges. “Fixed charges” consist of interest expense and the portion of rent expense we believe represents the interest component of such rent expense.

(in thousands, except for ratios)
	Years ended June 30,
	2003		2004		2005		2006		2007
Fixed charges:
Interest expense	$	155	$	134	$	1,145	$	1,939	$	1,950
Portion of rent expense deemed to represent interest		325		358		392		262		344
Total fixed charges	$	480	$	492	$	1,537	$	2,201	$	2,294
Earnings:
Net income	$	7,718	$	12,992	$	37,985	$	13,701	$	26,534
Income taxes		4,344		7,934		20,347		11,822		11,897
Fixed charges		480		492		1,537		2,201		2,294
Total earnings for computation of ratio	$	12,542	$	21,418	$	59,869	$	27,724	$	40,725
Ratio of earnings to fixed charges		26.1		43.5		39.0		12.6		17.8