Abu Mushayeed <abumushayeed@xxxxxxxxx> writes: > I am getting the following message in the log. I am trying to find out what does it mean ? > 2006-11-15 23:33:22 PST[unknown]md11.16.154.140FATAL: invalid startup packet layout: expected terminator as last byte It means the client sent an incorrect startup packet. What client software are you using? Maybe you've got port-scanning software that is sending something random to 5432? regards, tom lane