[Koha] Searching problem in 2.2.5

All, We have installed version 2.2.5 on a Linux machine, and everything is working well except some of the searching. The keyword searching works fine, but in the advanced searching, the author, title and subject always retrieves zero, although the keyword, series title, and everything else works fine. Could you help me? Thanks, James Weinheimer <mailto:j.weinheimer@aur.edu> j.weinheimer@aur.edu Director of Library and Information Services The American University of Rome via Pietro Roselli, 4 00153 Rome, Italy voice- 011 39 06 58330919 ext. 327 fax-011 39 06 58330992