I would also suggest using BerkeleyDB.pm, but with the DB_INIT_MPOOL|DB_INIT_CDB flags. In this mode, only one writer is allowed at a time, and Berkeley automatically handles all the locking and flushing. Just don't forget to use db_close() to close the file before untie'ing it.
Dan Wilga [EMAIL PROTECTED] Web Technology Specialist http://www.mtholyoke.edu Mount Holyoke College Tel: 413-538-3027 South Hadley, MA 01075 "Who left the cake out in the rain?"
