Bolt Beranek & Newman Inc, Cambridge, Massachusetts blames its $3.1m second quarter loss (the figures are in page 5) in part on poor market acceptance of its TC2000 second generation parallel Butterfly computer, which it says has generated far fewer orders than it expected: as a result, it is examining possible strategic alternatives for the BBN Advanced Computers Inc unit to capitalise on its potential more effectively, but it won’t elaborate on what.