What does the message below mean? server closed the connection unexpectedly This probably means the server terminated abnormally before or while processing the request. This message appears sometimes after i send a 'BEGIN' to the server and the processor load of the application goes up to 99%. This happens usually when the application starts and several threads start sending queries to save the changes since the last stop. The application its locking mechanism (we are aware of that libpq doesn't have interlocking) has worked fine in the past. This issue has became serious since we moved to the latest debian lenny distribution and started to use libpq5. OS : Debian linux Lenny kernel version 2.6.26-2-686 libpq : libpq5 8.3.7-0lenny Thank you in advance Attila Miklosi -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general