I am having intermittent issues when querying an mssql database using the FreeTDS library. 60 - 70% of the time it works fine but I often get the error:

[FreeTDS][SQL Server] Read from SQL server failed (49)

I am having trouble turning on the logging for FreeTDS to see what is going on. I have followed the instruction on the FreeTDS website with no avail.

My freetds.conf file looks like:

#   $Id: freetds.conf,v 1.12 2007/12/25 06:02:36 jklowden Exp $
# This file is installed by FreeTDS if no file by the same
# name is found in the installation directory.
# For information about the layout of this file and its settings,
# see the freetds.conf manpage "man freetds.conf".

# Global settings are overridden by those in a database
# server specific section
        # TDS protocol version
        tds version = 7.0

        # Whether to write a TDSDUMP file for diagnostic purposes
        # (setting this to /tmp is insecure on a multi-user system)
        dump file = /tmp/freetds.log
        dump file append = yes
        debug flags = 0x4FFF

        # Command and connection timeouts
        timeout = 10
        connect timeout = 10

        # If you get out-of-memory errors, it may mean that your client
        # is trying to allocate a huge buffer for a TEXT field.
        # Try setting 'text size' to a more reasonable limit
        text size = 64512

# A typical Sybase server
        host = symachine.domain.com
        port = 5000
        tds version = 5.0

# A typical Microsoft server
        host = ntmachine.domain.com
        port = 1433
        tds version = 7.0

Any ideas? Is there anyway to check that FreeTDS is even reading this conf file?