could not receive data from client: Unknown winsock error 10061

A los expertos,

Estoy con un problema a días y no consigo llegar a una solución:

servidor: server 2008
Postgresql 8.2
clientes: 3 maquinas Win XP

Me da el siguiente error: "could not receive data from client: Unknown winsock error 10061"
Este error puede aparecer cuando entro en la aplicación, o depues de varios minutos trabajando en la aplicación, o al final de trabajo.


2011-01-24 18:35:24 3212 LOCATION: AddRoleMems, user.c:1324
2011-01-24 18:35:33 2796 LOG: XX000: could not receive data from client: Unknown winsock error 10061
2011-01-24 18:35:33 2796 LOCATION: pq_recvbuf, pqcomm.c:727
2011-01-24 18:35:33 2796 LOG: 08P01: unexpected EOF on client connection
2011-01-24 18:35:33 2796 LOCATION: SocketBackend, postgres.c:307
2011-01-24 18:35:40 352 LOG: 00000: received fast shutdown request
2011-01-24 18:35:40 352 LOCATION: pmdie, postmaster.c:1920
2011-01-24 18:35:40 3860 LOG: 00000: shutting down
2011-01-24 18:35:40 3860 LOCATION: ShutdownXLOG, xlog.c:5424
2011-01-24 18:35:41 3860 LOG: 00000: database system is shut down
2011-01-24 18:35:41 3860 LOCATION: ShutdownXLOG, xlog.c:5432
2011-01-24 18:35:42 3724 LOG: 00000: logger shutting down
2011-01-24 18:35:42 3724 LOCATION: SysLoggerMain, syslogger.c:368

Coloqué el "log_min_messages" como "degug5" para ver que aparecia:

2011-01-24 18:40:16 2640 DEBUG: 00000: server process (PID 3676) exited with exit code 1
2011-01-24 18:40:16 2640 LOCATION: LogChildExit, postmaster.c:2422
2011-01-24 18:40:16 2640 DEBUG: 00000: waiting on 4 children
2011-01-24 18:40:16 2640 LOCATION: win32_waitpid, postmaster.c:4162
2011-01-24 18:40:18 3868 LOG: XX000: could not receive data from client: Unknown winsock error 10061
2011-01-24 18:40:18 3868 LOCATION: pq_recvbuf, pqcomm.c:727
2011-01-24 18:40:18 3868 LOG: 08P01: unexpected EOF on client connection
2011-01-24 18:40:18 3868 LOCATION: SocketBackend, postgres.c:307
2011-01-24 18:40:18 3868 DEBUG: 00000: proc_exit(0)
2011-01-24 18:40:18 3868 LOCATION: proc_exit, ipc.c:94
2011-01-24 18:40:18 3868 DEBUG: 00000: shmem_exit(0)
2011-01-24 18:40:18 3868 LOCATION: shmem_exit, ipc.c:125
2011-01-24 18:40:18 3868 DEBUG: 00000: exit(0)
2011-01-24 18:40:18 3868 LOCATION: proc_exit, ipc.c:112
2011-01-24 18:40:18 2640 DEBUG: 00000: reaping dead processes
2011-01-24 18:40:18 2640 LOCATION: reaper, postmaster.c:2015
2011-01-24 18:40:18 2640 DEBUG: 00000: waiting on 4 children
2011-01-24 18:40:18 2640 LOCATION: win32_waitpid, postmaster.c:4162
2011-01-24 18:40:18 2640 DEBUG: 00000: server process (PID 3868) exited with exit code 0
2011-01-24 18:40:18 2640 LOCATION: LogChildExit, postmaster.c:2422
2011-01-24 18:40:18 2640 DEBUG: 00000: waiting on 3 children
2011-01-24 18:40:18 2640 LOCATION: win32_waitpid, postmaster.c:4162
2011-01-24 18:40:22 2640 DEBUG: 00000: postmaster received signal 2
2011-01-24 18:40:22 2640 LOCATION: pmdie, postmaster.c:1859
2011-01-24 18:40:22 2640 LOG: 00000: received fast shutdown request
2011-01-24 18:40:22 2640 LOCATION: pmdie, postmaster.c:1920
2011-01-24 18:40:22 3448 LOG: 00000: shutting down

¿alguien me puede dar una luz de como poder solucionarlo?

Antonio Salas Mena