Electronics designer

Manufacturers' Services

(MSV)

plummeted 55.2% by late morning after it said it would fall 10 to 15 cents below the Street's third-quarter earnings estimate of 25 cents a share. It blamed currency rates, higher interest expenses and supply problems. The company, which went public this summer, also announced $1.2 billion outsourcing agreement with

3Com

(COMS)

.