Hang in PQgetResult

Hello,
I have a problem with my program that inserts records into postgreSQL
database.
After continuously running for several days, it suddenly hangs.  Attaching
with
gdb to a process gives the following stack trace.  It seems like a few
people
reported this problem but I haven't seen anyone suggest a steady solution.
In this post http://archives.postgresql.org/pgsql-bugs/2000-09/msg00062.php
it is suggested to call PQstatus(), before making PQexec().  So the idea is
to call PQstatus() and if it's not good to reconnect, right?
Please, help.
Thank you.

(gdb) where

#0  0x4013241e in select () from /lib/libc.so.6

#1  0x401cb980 in __DTOR_END__ () from /usr/idp/mgt-svr/lib/logActions/db.so

#2  0x401bf9e5 in pqWait (forRead=1, forWrite=0, conn=0x81f2318) at
fe-misc.c:782

#3  0x401bd9fd in PQgetResult (conn=0x81f2318) at fe-exec.c:1337

#4  0x401bdbe5 in PQexec (conn=0x81f2318,

    query=0xbfffe298 "INSERT INTO my_table VALUES (2, 1, 'no', 'no', 'no',
'no',"...)

    at fe-exec.c:1462

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