Arris ( ARRS) upgraded at CIBC to Outperform. $14 price target. Stock has been oversold, despite uncertain second half outlook. Biogen Idec ( BIIB) downgraded at Weisel from Overweight to Market-weight. Stock has reached the $82 price target, and see little upside given takeover possibilities. BMC Software ( BMC) downgraded at Bear Stearns from Peer Perform to Underperform. Valuation call. Core sales could also be weak, following IBM's guidance last night. CNA Financial ( CNA) upgraded at Merrill from Neutral to Buy. Stock is down 25% from June highs, and 7% below the projected year-end book value. Also expect higher dividends. $48 price target. Cablevision ( CVC) downgraded at Citigroup from Hold to Sell. Don't expect the Dolan offer to go through. $33 price target. Eaton ( ETN) upgraded at Merrill to Buy. $110 price target. Estimates also raised, as the truck recovery should accelerate through 2008. Tax rate should also remain favorable. Gentiva Health Services ( GTIV) upgraded at Jefferies to Buy rating from Hold. Price target lifts to $22 from $20.50 and FY2008 EPS estimates hold at $1.14. Lincare Holdings ( LNCR) upgraded at Jefferies to Buy rating from Hold. Price target lifts to $40 from $37 and FY2008 EPS estimates upped to $2.94 from $2.90. Level 3 ( LVLT) downgraded at Cowen from Outperform to Neutral. Estimates also cut, as acquisitions are taking longer to integrate.