write_data(562) / error writing 5 bytes to client => client disconnecting

[Koen Linders]

I'm having irregular disconnecting of win2k/xp clients from our samba PDC  
(fileserver).

I've been reading a lot, searching through google,comparing other smb.conf  
out on the web, but most seem to have more or less the same main parts and  
nothing has solved the problem yet.

Sometimes it happens when i start my windows explorer to browse my HD, but  
not all of the time
I've also seen it happen when clients can't find their roaming profiles  
(sometimes happening)
When e.g. my pc dc's from samba shares, i'm still able to connect through  
Putty (ssh) without a problem.

I've been searching through the logs and each time a client dc's,  
something like this happens:

	lib/util_sock.c:write_data(562)
	...
	Error writing 5 bytes to client. -1. (Connection reset by peer)

Part of error log.smbd down here.

[2007/07/24 09:19:32, 0] lib/util_sock.c:get_peer_addr(1229)
   getpeername failed. Error was Transport endpoint is not connected
[2007/07/24 09:19:32, 0] lib/util_sock.c:get_peer_addr(1229)
   getpeername failed. Error was Transport endpoint is not connected
[2007/07/24 09:19:32, 1] lib/util_sock.c:get_peer_name(1188)
   Gethostbyaddr failed for 0.0.0.0
[2007/07/24 09:19:32, 0] lib/access.c:check_access(327)
[2007/07/24 09:19:32, 0] lib/util_sock.c:get_peer_addr(1229)
   getpeername failed. Error was Transport endpoint is not connected
[2007/07/24 09:19:32, 0] lib/util_sock.c:get_peer_addr(1229)
   getpeername failed. Error was Transport endpoint is not connected
   Denied connection from 0.0.0.0 (0.0.0.0)
[2007/07/24 09:19:32, 1] smbd/process.c:process_smb(1103)
[2007/07/24 09:19:32, 0] lib/util_sock.c:get_peer_addr(1229)
   getpeername failed. Error was Transport endpoint is not connected
   Connection denied from 0.0.0.0
[2007/07/24 09:19:32, 0] lib/util_sock.c:write_data(562)
   write_data: write failure in writing to client 192.168.1.148. Error  
Connection reset by peer
[2007/07/24 09:19:32, 0] lib/util_sock.c:send_smb(769)
   Error writing 5 bytes to client. -1. (Connection reset by peer)
[2007/07/24 09:19:32, 1] lib/util_sock.c:get_peer_name(1188)
   Gethostbyaddr failed for 192.168.1.148


Part of the smb.conf

[global]
	netbios name = SERVER
	workgroup = TEST

	domain master = yes
	domain logons = yes
	local master = yes
  	preferred master = yes
	os level = 35
	wins support = yes
#	name resolve order = wins lmhosts hosts bcast
#	dns proxy = yes

#	browse list = yes
	browseable = no
	max disk size = 20480

	# Logging
#	log level = 3					#Log level 3 only for troubleshouting
#	log file = /var/log/samba/log.%m		
	
	# [globals] User and group related

	idmap gid = 15000-20000
	add group script = /usr/sbin/groupadd %g
	delete group script = /usr/sbin/groupdel %g

	idmap uid = 15000-20000
	add user script = /usr/sbin/useradd -m %u
	delete user script = /usr/sbin/userdel -r %u
	
	add machine script = /usr/sbin/useradd -s /bin/false -d /dev/null -g  
machines %u

	passdb backend = tdbsam
	hosts allow = 192.168.1. 127.0.0.1