This morning, Campbell Soup's (CPB) - Get Report rating was downgraded to sell from hold by Credit Suisse First Boston analyst David Nelson due to what he said was the unsustainability of the company's earnings growth.

Affymetrix

(AFFX)

: coverage REINSTATED as a near-term accumulate, long-term buy at

Merrill Lynch

.

Alcan Aluminum

(AL) - Get Report

: coverage REINSTATED with a buy rating at CS First Boston.

Delhaize America

(DZA)

: rating DOWN to market performance from buy at

Donaldson Lufkin & Jenrette

.

DoubleClick

(DCLK)

: rating UP to strong buy at CS First Boston.

Human Genome

(HGSI)

: coverage REINSTATED as a near- and long-term accumulate at Merrill Lynch.

Kroger

(KR) - Get Report

: rating DOWN to market performance from buy at Donaldson Lufkin & Jenrette.

Sigma-Aldrich

(SIAL)

: rating DOWN to neutral from buy at

Lehman Brothers

.

Thoratec Laboratories

(THOR) - Get Report

: coverage STARTED as buy; 17 price target at Lehman Brothers.

Vitesse Semiconductor

(VTSS)

: rating DOWN to buy from strong buy CSFB.