Why do I keep seeing the error message 'lib/util_sock.c:get_peer_addr(1000) getpeername failed. Error was Transport endpoint is not connected (0.0.0.0)' in my Samba logs and what does it mean?

Issue

There are error messages in the /var/log/message.

Mar  7 11:59:35 hostname smbd[6280]: [2010/03/07 11:59:35, 0] lib/util_sock.c:get_peer_addr(1224)
Mar  7 11:59:35 hostname smbd[6280]:   getpeername failed. Error was Transport endpoint is not connected
Mar  7 11:59:35 hostname smbd[13882]: [2010/03/07 11:59:35, 0] lib/util_sock.c:get_peer_addr(1224)
Mar  7 11:59:35 hostname smbd[13882]:   getpeername failed. Error was Transport endpoint is not connected
Mar  7 11:59:35 hostname smbd[13882]: [2010/03/07 11:59:35, 0] lib/util_sock.c:write_data(562)
Mar  7 11:59:35 hostname smbd[13882]:   write_data: write failure in writing to client 0.0.0.0. Error Connection reset by peer
Mar  7 11:59:35 hostname smbd[13882]: [2010/03/07 11:59:35, 0] lib/util_sock.c:send_smb(761)
Mar  7 11:59:35 hostname smbd[13882]:   Error writing 4 bytes to client. -1. (Connection reset by peer)