Linux Hints

Latest: http://www.openldap.org/faq/index.cgi?file=18

If Berkeley DB 2.x should be used with thread support activated, read the
file build/db.2.x.README carefully. The Berkeley package must be build
appropriately to support threaded applications as expected.

Some distributions of Linux now ship with BerkeleyDB 2.4.16.
We recommend upgrading to Berkeley DB 2.7.5 available from.
Sleepycat (http://www.sleepycat.com/).