11. Other Expense (Income), net

Other expense (income), net consists of the following (in thousands):


	Successor			Predecessor						Successor			Predecessor
	Period from			Period from						Period from			Period from			Nine Fiscal
	April 20, 2011			April 2, 2011			Fiscal Quarter			April 20, 2011			October 2,			Months
	through			through			Ended			through			2010 through			Ended
	July 1, 2011			April 19, 2011			July 2, 2010			July 1, 2011			April 19, 2011			July 2, 2010
Investment and interest income	$	(42	)	$	(13	)	$	(137	)	$	(42	)	$	(159	)	$	(257	)
Gain on sale of investments		(5	)		—			(5,177	)		(5	)		(1,393	)		(12,911	)
Loss on extinguishment of debt		—			—			7,976			—			—			18,581
Decrease (increase) in the fair value of derivative instruments		3,757			3,690			6,848			3,757			9,469			(11,353	)
Other		102			101			(262	)		102			506			229

Other expense (income), net	$	3,812		$	3,778		$	9,248		$	3,812		$	8,423		$	(5,711	)

Other expense, net of $3.8 million during the period from April 20, 2011 through July 1, 2011 and the period from April 2, 2011 through April 19, 2011, respectively, primarily consisted of a $3.8 million decrease in the fair value of the Company’s warrant to purchase 6.1 million shares of Mindspeed common stock. Other expense, net of $8.4 million, net during the period from October 2, 2010 through April 19, 2011 primarily consisted of a $9.5 million decrease in the Mindspeed warrant partially offset by a $1.4 million gain on sale of equity investments. Of the $1.4 million gain on sale of equity investments, the Company has received proceeds in the amount of $0.8 million. The difference between the gain and proceeds has been recorded as a receivable.

Other expense, net of $9.2 million, net during the fiscal quarter ended July 2, 2010 primarily consisted of a loss of $8.0 million on extinguishment of convertible debt, which consists of $5.8 million of unamortized debt discount and a $2.1 million premium over par paid upon repurchase, and a $6.9 million decrease in the fair value of our warrant to purchase 6.1 million shares of Mindspeed common stock, partially offset by a $5.2 million gain on sale of equity investments and $0.4 million of investment and interest income on invested cash balances and other gains. Other (income), net of $5.7 million, net during the nine fiscal months ended July 2, 2010 primarily consisted of a $12.9 million gain on sale of equity investments and an $11.4 million increase in the fair value of our warrant to purchase 6.1 million shares of Mindspeed common stock, partially offset by a loss of $18.6 million on extinguishment of debt, which consists of $13.4 million of unamortized debt discount, $1.8 million premium over par paid upon repurchase and $3.4 million of transaction costs.