Hi Mark,

thanks for your answer.

Nevertheless, I looked up for crashed server errors in
/var/log/syslog as well as in /var/log/firebird2.5.log and found none.
The server did not crash, it simply began to refuse local connections
suddenly.

Also, I ran the server for many years and had never seen this problem.

The only real difference is that two weeks ago I modified
/etc/firebird/2.5/firebird.conf disabling remote interface connections.

RemoteBindAddress = localhost

( previously I had this line commented )

Taking into account the error message suddenly thrown, I suspect
that may be a bug when this option is set.

Aldo Caruso