Crashes happen all the time

I need some help from the freetds gurus, maybe Frediano Ziglio?. Since I
moved on to the Asterisk version 1.6, it crashes several times per day. The
traces are in 
https://issues.asterisk.org/view.php?id=17084

The Asterisk developers think that they are not responsible, and I don't
know if I need to contact the makers of unixODBC or in fact the offending
code is  in freetds.

I use the latest version of unixodbc, unixODBC 2.2.14, and Freetds
Compile-time settings (established with the "configure" script)
                            Version: freetds v0.82.1.dev.20100304
             freetds.conf directory: /usr/etc
     MS db-lib source compatibility: yes
        Sybase binary compatibility: no
                      Thread safety: yes
                      iconv library: yes
                        TDS version: 8.0
                              iODBC: no
                           unixodbc: yes

My server is SQL 2008.

Many thanks Federico