Amedisys upgraded at Oppenheimer: AMED was upgraded from Sell to Neutral, Oppenheimer said. Company already pricing any risk for Medicare reimbursement, and the stock deserves a higher earnings multiple. Comverse Tech downgraded at Oppenheimer: CMVT was downgraded from Buy to Neutral, Oppenheimer said. Recent WSJ article suggests the company may have to take a lot of time to reconcile its options accounting. Crocs coverage initiated at BB&T: CROX rated a Hold in new coverage at BB&T this morning. Current momentum supported by multiple planned product launches in 2006. Crocs coverage initiated at Piper: Piper said it is initiating coverage on CROX with an Outperform rating and $31 target price. Evergreen Solar downgraded at Weisel: Weisel said it is downgrading ESLR to a Peer Perform rating as increased cost headwinds will limit upside potential in the near term. Current valuation leaves little room for error. Eaton Vance upgraded at Keefe, Bruyette: EV was upgraded from Market Perform to Outperform, Keefe, Bruyette & Woods said. $31 price target. Net inflows should improve over the coming quarters, and the stock could generate a 16% total return over the next 12 months. Extreme Networks upgraded at Prudential: Prudential said it is upgrading EXTR to a Neutral Weight rating as new product cycle and improved balance sheet should limit downside. Dot Hill Systems upgraded at Baird: Baird said it is upgrading HILL to Outperform from Neutral based on positive growth prospects. Believes sell-off is overdone. Maintained $8 target price. Lamar Advertising downgraded at Friedman, Billings, Ramsey: FBR said it is downgrading LAMR to Market Perform from Outperform based on valuation. Stock has appreciated 17% year-to-date. Lamar Advertising downgraded at Weisel: Weisel said it downgrading LAMR to a Peer Perform rating on valuation. Fundamentals remain strong. OfficeMax upgraded at Goldman: Goldman said it is increasing its rating on OMX to Outperform from Inline. Turnaround opportunity offers compelling risk/reward profile.