pq_recvbuf: unexpected EOF on client connection ??

Again this morning the postgres DB stopped accepting connections from
localhost (linux), everything worked OK yesterday.
The (windows) client have no problem connecting to the posgres db.
But I can connet as postger su with "psql".
-Maybe it's afraid of the dark ?
But seriously, any suggestion of how to proceed in finding out what goes
wrong would me greatly appreaciated.

The postgres is 6.5.3 and 6.3 S.U.S.E. w/ 2.2.14 kernel.
last entry in postgres.log was
"pq_recvbuf: unexpected EOF on client connection"

When I close the client connection (from client) I get
"pq_recvbuf: recv() failed: Connection reset by peer"
or
"pq_recvbuf: unexpected EOF on client connection"
- in the log, is this normal ?

-michael (A)

--"Would you fly on airplane controlled by MS Windows ?"--