Acme Packet ( APKT) upgraded at Piper Jaffray to Outperform from Market Perform. Company reported a great second quarter beating analysts estimates in revenues and gross and operating margins. Customer concentration is improving. $15 price target. Acme Packet upgraded at Deutsche Bank to Buy from Hold. Signs of increasing customer adoption mark a potential inflection point. Current valuation marks a favorable risk/reward. Price target raised to $15 from $13. Bare Escentuals ( BARE) downgraded at CIBC from Outperform to Sector Perform. $48 price target. Company's infomercial business continues to deteriorate. Broadcom ( BRCM) upgraded at CIBC from Sector Perform to Outperform. DTV, bluetooth headset 802.11n and gaming opportunities all appear poised to ramp. $40 price target. Corinthian Colleges ( COCO) upgraded at Piper Jaffray to outperform and raises price target from $12 to $17. Cubic ( CUB) upgraded at FBR to Market Perform rating from Under Perform. Price target upped to $28 from $24 and FY 2008 eps estimates jump to $1.59 from $1.35. Electronic Data Systems ( EDS) downgraded at Jefferies to Hold rating from Buy. Price target lowered to $27 from $34, and FY 2008 eps estimates drop to $1.78 from $1.84. Electronic Data Systems downgraded at Merrill to Neutral. Company cut free cash flow guidance. Endo Pharma ( ENDP) downgraded at UBS to Neutral rating from Buy. Price target lowered to $38 from $40, and FY 2008 eps estimates drift down to $2.12 from $2.13.