MOST NOTEWORTHY: Alaska Communications, Royal Bank of Scotland and Frontier Oil were today's noteworthy upgrades:

• Banc of America upgraded shares of Alaska Communications (NASDAQ: ALSK) to Buy from Neutral as they believe the company will return to a dividend growth focus after completing its strategic initiatives.
  
• Credit Suisse raised Royal Bank of Scotland (NYSE: RBS) to Neutral from Underperform as they believe the company has already taken "prudent" write-downs.
  
• Bear upgraded Frontier Oil (NYSE: FTO) to Peer Perform from Underperform as they believe the company is better positioned to withstand this period of margin weakness.

OTHER UPGRADES:

• Jefferies upgraded Adobe Systems (NASDAQ: ADBE) to Hold from Underperform.
  
• RBC Capital lifted Medarex Inc. (NASDAQ: MEDX) to Sector Perform from Underperform.
  
• United Parcel Service (NYSE: UPS) was upgraded at Merrill to Buy from Neutral.

MOST NOTEWORTHY: Comcast Corp (CMCSA), Monster Worldwide (MNST), Microsoft (MSFT), XM Satellite Radio Holdings Inc (XMSR) and Sirius Satellite Radio (SIRI) were today's most noteworthy upgrades:

• Comcast Corp (NASDAQ: CMCSA) was upgraded at AG Edwards to Buy from Hold with a $33 objective, citing valuation.

• Gabelli raised Monster Worldwide's (NASDAQ: MNST) rating to Buy from Hold and sees an attractive long-term opportunity as near-term margin pressure issues are providing an opportunity.

• CIBC upgraded shares of Microsoft (NASDAQ: MSFT) to Sector Performer from Underperformer to reflect solid Q3 results and an improved 2008 outlook. Citigroup raised Microsoft's rating to Buy from Hold after the quarterly report.

• UBS upgraded both XM Satellite Radio (NASDAQ: XMSR) to Buy from Neutral citing improving fundamentals and Sirius Satellite Radio (NASDAQ: SIRI) to Buy from Neutral on better operational execution...

OTHER UPGRADES:

• Goldman upgraded NetGear, Inc (NASDAQ: NTGR) to Neutral from Sell.

• KLA-Tencor Corp (NASDAQ: KLAC) was raised to Neutral from Underperform at First Albany following positive Q3 results.

• Alaska Communications Systems Group, Inc (NASDAQ: ALSK) was upgraded to Hold from Sell at Stifel following its first quarter report.

• RBC Capital raised Baidu.com, Inc (NASDAQ: BIDU) to Outperform from Sector Perform citing guidance that indicated a reacceleration of underlying fundamentals.

• JP Morgan added Taser International, Inc (NASDAQ: TASR) to its SMID Money List and will maintain its Outperform rating.

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

MOST NOTEWORTHY: Some of today's most notable upgrades include SanDisk Corp (SNDK), CVS Corp (CVS), Dow Jones & Co (DJ) and DaVita Inc (DVA):

• SanDisk Corp (NASDAQ: SNDK) was upgraded to Buy from Neutral at UBS with a $53 target, as they believe Apple's (AAPL) new 16GB & 32GB iPod Video products will be NAND flash based. The firm expects SanDisk shares to perform as Apple's products ramp.

• Deutsche Bank upgraded shares of CVS Corp (NYSE: CVS) to Buy from Hold with a $42 target as they believe the bidding process for Caremark Rx, Inc (NYSE: CMX) is over, reducing concerns.

• Prudential upgraded shares of Dow Jones & Co (NYSE: DJ) to Neutral from Underweight to reflect valuation and the company's strong 2007 outlook.

• Piper Jaffray upgraded DaVita Inc (NYSE: DVA) to Outperform from Market Perform with a $59 target on valuation.

OTHER UPGRADES:

• Citigroup upgraded Adolor Corp (NASDAQ: ADLR) to Hold from Sell with a $10 target to reflect GlaxoSmithKline's (NYSE: GSK) plans for an additional advanced study of Entereg.

• Wachovia upgraded shares of Symmetry Medical Inc (NYSE: SMA) based on analysis that shows inventory levels have fallen at large-cap orthopedics firms while capital expenditures have stabilized, competitors are more upbeat on market outlook, and checks that indicate the supplier market has stabilized.

• Foundry Networks, Inc (NASDAQ: FDRY) was upgraded to Buy from Neutral at Bank of America.

• JP Morgan upgraded Alaska Communications Systems Group (NASDAQ: ALSK) to Outperform from Neutral on valuation.

• Goldman Sachs upgraded PPG Industries (NYSE: PPG) to Buy from Neutral with an $82 target.

• Merrill Lynch upgraded shares of Expedia, Inc (NASDAQ: EXPE) to Buy from Neutral with a $27 target.

• Matrix USA upgraded AMR Corp (NYSE: AMR) to Hold from Sell on valuation.

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