thread-safe libpq and DBD::Pg - Mailing list pgsql-interfaces

When experimenting with    threaded perl
I noticed I had to lock access to the database
a one user at the time in order get reliable (no SEGV).

Unfortunely it is 3 layer between my server and the wire,
DBI, DBD::Pg och libpq.
Thinking I would start from the bottom:
Has anyone any experience of the thread-safeness of libpq?

    have a good weekend,

        Göran