Hi all, These past 10 days, Josh Cooley fixed and helped to fix a lot of critical bugs on Npgsql! Here are they: Josh Cooley fixed a bug when dealing with concurrent connection establishment using Npgsql RC2. When I implemented ConnectionTimeout support for connection establishment, I was incorrectly using an instance variable with a singleton object :( This was leading to some nasty problems like this . Here is the relevant stack trace: Npgsql.NpgsqlException: Operation not allowed on non-connected sockets. at Npgsql.NpgsqlClosedState.Open(NpgsqlConnector context) at Npgsql.NpgsqlConnector.Open() at Npgsql.NpgsqlConnectorPool.GetNonPooledConnector(NpgsqlConnection Connection) at Npgsql.NpgsqlConnectorPool.RequestConnector(NpgsqlConnection Connection) at Npgsql.NpgsqlConnection.Open() Another problem, this time with async notification support, was that Npgsql wasn't handling correctly the notification message sent from server when async notification was off. This was le