MOST NOTEWORTHY: Motorola (MOT), SanDisk (SNDK), Time Warner (TWX), Schering-Plough (SGP), GlaxoSmithKline (GSK) and Openwave Systems (OPWV) were some of today's noteworthy upgrades:

• Deutsche Bank believes the worst is over for Motorola (NYSE: MOT) and expects an improvement in growth over the next several quarters, upgrading shares to Buy from Hold.

• CIBC upgraded shares of SanDisk (NASDAQ: SNDK) to Sector Outperformer from Sector Performer following checks that indicate NAND supply is being allocated, visibility is improving, and SanDisk positioning is strengthening.

• Pali Capital raised Time Warner (NYSE: TWX) shares to Buy from Neutral as they believe the "valuation has become too attractive to ignore."

• JP Morgan upgraded Schering-Plough (NYSE: SGP) and GlaxoSmithKline (NYSE: GSK) to Neutral from Underweight based on valuation.

• CIBC upgraded Openwave Systems (NASDAQ: OPWV) to Sector Performer from Sector Underperformer believing the Street's expectations are now in line with expectations, limiting downside potential at these levels...

OTHER UPGRADES:

• Merrill upgraded BT Group (NYSE: BT) to Buy from Sell.

• JP Morgan assumed coverage of Arkansas Best (NASDAQ: ABFS) with a Neutral rating, up from an Underweight rating.

• AG Edwards upgraded UnitedHealth (NYSE: UNH) to Buy from Hold.

• Merrill upgraded Dean Foods (NYSE: DF) to Neutral from Sell.

• UBS upgraded Marvell Technology (NASDAQ: MRVL) to Buy from Neutral.

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