Adaptive Broadband (ADAP) - Get Report was down 30.6% in early trading, after it said second-quarter revenue will be just $8 million, compared with its previous estimate of more than $31 million

The data networking company blamed shipments that were deferred by a key customer.

Western Multiplex

( WMUX), which is supposed to merge with Adaptive Broadband, said it would reevaluate its plans in the wake of the announcement by its prospective partner. Western Multiplex was up 27.3%.