samba - Nov 2009 - Broken pipe in Samba logs when using Samba with Windows 7 x64?

Hello,

After upgrading a host from XP/32 to Windows 7/64, I see the following entries
in the logs, what is the root cause of this issue?

Nov 14 10:10:18 l1 smbd[6174]:   getpeername failed. Error was Transport
endpoint is not connected
Nov 14 10:10:18 l1 smbd[6174]:   write_data: write failure in writing to client
0.0.0.0. Error Broken pipe
Nov 14 10:10:18 l1 smbd[6174]: [2009/11/14 10:10:18,  0]
smbd/process.c:62(srv_send_smb)
Nov 14 10:10:18 l1 smbd[6174]:   Error writing 75 bytes to client. -1.
(Transport endpoint is not connected)
Nov 14 10:10:18 l1 smbd[6174]: [2009/11/14 10:10:18,  0]
lib/util_sock.c:738(write_data)
Nov 14 10:10:18 l1 smbd[6174]: [2009/11/14 10:10:18,  0]
lib/util_sock.c:1491(get_peer_addr_internal)
Nov 14 10:10:18 l1 smbd[6174]:   getpeername failed. Error was Transport
endpoint is not connected
Nov 14 10:10:18 l1 smbd[6174]:   write_data: write failure in writing to client
0.0.0.0. Error Broken pipe
Nov 14 10:10:18 l1 smbd[6174]: [2009/11/14 10:10:18,  0]
smbd/process.c:62(srv_send_smb)
Nov 14 10:10:18 l1 smbd[6174]:   Error writing 75 bytes to client. -1.
(Transport endpoint is not connected)
Nov 14 10:10:18 l1 smbd[6174]: [2009/11/14 10:10:18,  0]
lib/util_sock.c:738(write_data)
Nov 14 10:10:18 l1 smbd[6174]: [2009/11/14 10:10:18,  0]
lib/util_sock.c:1491(get_peer_addr_internal)

Nov 17 13:26:23 l1 smbd[19701]: [2009/11/17 13:26:23,  0]
lib/util_sock.c:539(read_fd_with_timeout)
Nov 17 13:26:23 l1 smbd[19701]: [2009/11/17 13:26:23,  0]
lib/util_sock.c:1491(get_peer_addr_internal)
Nov 17 13:26:23 l1 smbd[19701]:   getpeername failed. Error was Transport
endpoint is not connected
Nov 17 13:26:23 l1 smbd[19701]:   read_fd_with_timeout: client 0.0.0.0 read
error = Connection reset by peer.

Justin.