Novell's board of directors on Thursday named Ron Hovsepian as CEO to replace Jack Messman, and <A HREF="http://news.zdnet.com/2100-3513_22-6086703.html?tag=nl.e589">ousted the company's chief financial officer.</A> Company executives said the changes were made to accelerate growth at Novell, which has had disappointing financial results, particularly in its Linux business.