A US federal judge has prohibited Berkeley Software Design Inc from distributing production or updated pre-production versions of its BSD/386 operating system to anyone, anywhere. BSD/386, which the company may distribute in its current pre-production or beta state, is the centrepiece of the lawsuit Unix System Laboratories Inc filed against Berkeley Software, charging it with copyright infringement and misappropriation of trade secrets. The ruling came after Berkeley Software asked the court to postpone a hearing on a motion for a preliminary injunction against it made by Unix Labs. Unix Labs is asking the court for a preliminary injunction forbidding Berkeley Software to distribute any of its BSD/386 software, and is hoping that as a result of the anticipated trial, the courts will make it permanent. The hearing has been moved back to January 25 from December 14.