Hi, Could you try to add this to /etc/libmap.conf: [/usr/local/bin/nagios] libpthread.so.2 libthr.so.2 Then restart your Nagios server and see if it helps. Cheers, Anders. On Fri, Jan 18, 2008 at 04:16:08AM +0000, linimon at FreeBSD.org wrote: > Synopsis: Problem with nagios under FreeBSD6.3 > (..) -- Anders.