"Henrik Steffen" <steffen@city-map.de> writes:
> Does anyone know what the message "invalid length of startup packet"
> in /var/log/messages means?
Something is connecting to your postmaster and sending invalid data.
> It says it's "fatal" - so what is the reason
> for this message, what does it mean and what can I do against it?
In this context "fatal" just means that that connection will be dropped.
regards, tom lane