MOST NOTEWORTHY: CheckFree (CKFR), Talbots (TLB), SPSS Inc (SPSS), Network Appliance (NTAP) and Pozen Inc (POZN) were today's noteworthy downgrades:

• Following FiServ's (NASDAQ: FISV) acquisition of CheckFree, Raymond James cut CKFR shares to Market Perform from Strong Buy and Baird downgraded shares to Neutral from Outperform.

• Talbots (NYSE: TLB) was cut to Sell from Hold at Citigroup based on valuation, continued earnings disappointments, and a lack of earnings visibility.

• Cowen downgraded shares of SPSS Inc (NASDAQ: SPSS) to Underperform from Neutral citing decelerating growth and poor earnings quality.

• Bear Stearns cut Network Appliance (NASDAQ: NTAP) to Underperform from Peer Perform on the negative Q1 pre-announcement. Pacific Crest downgraded shares to Sector Perform from Outperform.

• After Pozen (NASDAQ: POZN) received a second approvable letter for Trexima, shares were downgraded by three firms:
  
• To Neutral from Strong Buy at First Albany
  
• To Hold from Buy at Jefferies and Lazard...

OTHER DOWNGRADES:

• Oppenheimer downgraded Applebee's (NASDAQ: APPB) to Neutral from Buy.

• Gabelli downgraded Boston Beer (NYSE: SAM) to Hold from Buy.

• Lehman downgraded Luxottica (NYSE: LUX) and Clorox (NYSE: CLX) to Equal Weight from Overweight.

• Thomas Weisel downgraded Nortel Networks (NYSE: NT) to Market Weight from Overweight.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Some of today's most notable upgrades include Qualcomm, Inc (QCOM), Countrywide Financial Corp (CFC), American Eagle Outfitters (AEO) and Chevron Corp (CVX):

• JP Morgan upgraded Qualcomm, Inc (NASDAQ: QCOM) to Neutral from Underweight, to reflect the company's re-accelerating business fundamentals and positive pre-announcement on Tuesday.

• Friedman Billings upgraded shares of Countrywide Financial Corp (NYSE: CFC) to Outperform from Market Perform as they believe the company remains among the premiere mortgage originators and will be the ultimate beneficiary of the mortgage market shakeout.

• Susquehanna upgraded shares of American Eagle Outfitters Inc (NYSE: AEO) to Positive from Neutral based on a strong spring assortment and long-term earnings power from new brand concepts aerie and MARTIN+OSA.

• Deutsche Bank upgraded shares of Chevron Corp (NYSE: CVX) to Hold from Sell based a backlog of resources that keeps growing and increased pressure on the need for delivery.

OTHER UPGRADES:

• Lehman upgraded Darden Restaurants, Inc (NYSE: DRI) to Equal-Weight from Underweight to reflect the company's strong management team and what they believe to be "very achievable" guidance.

• Cadbury Schweppes plc (NYSE: CSG) was upgraded to Neutral from Sell at Goldman Sachs as they believe the company may break up Nelson Peltz acquired a stake in the company.

• AG Edwards upgraded El Paso Corp (NYSE: EP) to Buy from Hold with a $16 target.

• Gladstone Capital Corp (NASDAQ: GLAD) was upgraded to Market Perform from Underperform at Wachovia.

• Gabelli upgraded shares of Boston Beer Company (NYSE: SAM) to Buy from Hold following the strong fourth quarter report.

• Southwest Airlines Co (NYSE: LUV) and JetBlue Airways Corp (NASDAQ: JBLU) were upgraded to Overweight from Neutral at HSBC.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Apple Computer, Inc. (NASDAQ:AAPL), First Data (FDC) and ASM International (ASMI) top today's extensive downgrade list.

• Apple was downgraded to Hold from Buy at Citigroup, citing valuation and the unlikely introduction of the new video iPod before the holiday season.
• First Data was downgraded to Neutral from Overweight at J.P. Morgan based on valuation and expectations of a Q3 miss.
• CIBC downgraded ASM International to Sector Performer from Sector Outperform based on checks that indicated Intel (INTC) is pushing out adoption of ASMI's atomic layer disposition tool for high-k at 45mn. They note a delay would be positive for Applied Materials (AMAT).

OTHER DOWNGRADES:

• Due to the change in management and lowered guidance, both Credit Suisse and KeyBanc/McDonald downgraded IT service provider Keane (KEA).
• ThinkEquity downgraded CryptoLogic (CRYP) to Source of Funds from Accumulate based on the ratification of the Internet gambling bill that will impact earnings.
• Boston Beer (SAM) was downgraded to Neutral from Overweight on valuation.
• USA Truck (USAK) was downgraded by Stephens to Underweight from Equal Weight, citing a less certain 2007 trucking environment and the recent stock offering.

Ratings summary provided courtesy of TheFlyOnTheWall.com.