Suse 10.3 SSH und SMB hängen sporadisch, Ping geht

Hallo Leute

Habe hier ein Netzwerk mit ca 70 Usern. Fileserver ist Suse 10.3. Der mountet einen 2003 storage server über NFS und gibt diesen über Samba frei.
Hat 3 Jahre ohne Probleme funktioniert. Einzige was mir an großartigen Neuerungen bekannt ist, es sind viele Win7-Clients dazu gekommen und Symantec Endpoint wurde installiert.
Alle 5-20 Min stellt der Server die Dienste ein. Dann geht kein SSH, kein Samba, nur noch Ping. Switches habe ich bereits getauscht... Bei wenig Last scheint der Fehler nicht aufzutreten. Was kann das noch sein?


Mount
192.168.1.78:/UserData2 /Dummy2 nfs rsize=8192,wsize=8192,timeo=14,intr,hard,nolock 0 0


Samba

[global]
workgroup = EDV
server string = Dummy1
client NTLMv2 auth = Yes
client lanman auth = No
client plaintext auth = No
log file = /var/log/samba/log.%m.%U
smb ports = 139
keepalive = 30
max open files = 20000
logon path = \\%N\%U\work\profile
logon home = \\%N\%U\work
domain master = No
kernel oplocks = No
ldap ssl = no
read only = No
create mask = 0777
force create mode = 0777
security mask = 0775
directory mask = 0777


log Messages

Jul 19 10:29:43 Dummy1 smbd[21110]: [2011/07/19 10:29:43, 0] lib/util_sock.c:read_data(534)
Jul 19 10:29:43 Dummy1 smbd[21110]: read_data: read failure for 4 bytes to client 192.168.1.21. Error = Connection reset by peer
Jul 19 10:29:43 Dummy1 smbd[21110]: [2011/07/19 10:29:43, 0] lib/util_sock.c:write_data(562)
Jul 19 10:29:43 Dummy1 smbd[21110]: write_data: write failure in writing to client 192.168.1.21. Error Broken pipe
Jul 19 10:29:43 Dummy1 smbd[21110]: [2011/07/19 10:29:43, 0] lib/util_sock.c:send_smb(769)
Jul 19 10:29:43 Dummy1 smbd[21110]: Error writing 75 bytes to client. -1. (Broken pipe)
Jul 19 10:31:05 Dummy1 smbd[21103]: [2011/07/19 10:31:05, 0] smbd/dir.c:dptr_close(289)
Jul 19 10:31:05 Dummy1 smbd[21103]: Invalid key 256 given to dptr_close
Jul 19 10:33:15 Dummy1 smbd[21112]: [2011/07/19 10:33:15, 0] lib/util_sock.c:read_data(534)
Jul 19 10:33:15 Dummy1 smbd[21112]: read_data: read failure for 4 bytes to client 192.168.1.21. Error = Connection reset by peer
Jul 19 10:33:15 Dummy1 smbd[21112]: [2011/07/19 10:33:15, 0] lib/util_sock.c:write_data(562)
Jul 19 10:33:15 Dummy1 smbd[21112]: write_data: write failure in writing to client 192.168.1.21. Error Broken pipe
Jul 19 10:33:15 Dummy1 smbd[21112]: [2011/07/19 10:33:15, 0] lib/util_sock.c:send_smb(769)
Jul 19 10:33:15 Dummy1 smbd[21112]: Error writing 75 bytes to client. -1. (Broken pipe)
Jul 19 10:36:19 Dummy1 smbd[21137]: [2011/07/19 10:36:19, 0] lib/util_sock.c:read_data(534)
Jul 19 10:36:19 Dummy1 smbd[21137]: read_data: read failure for 4 bytes to client 192.168.1.241. Error = Connection reset by peer
Jul 19 10:37:01 Dummy1 smbd[21138]: [2011/07/19 10:37:01, 0] lib/util_sock.c:read_data(534)
Jul 19 10:37:01 Dummy1 smbd[21138]: read_data: read failure for 4 bytes to client 192.168.1.21. Error = Connection reset by peer
Jul 19 10:37:01 Dummy1 smbd[21138]: [2011/07/19 10:37:01, 0] lib/util_sock.c:write_data(562)
Jul 19 10:37:01 Dummy1 smbd[21138]: write_data: write failure in writing to client 192.168.1.21. Error Broken pipe
Jul 19 10:37:01 Dummy1 smbd[21138]: [2011/07/19 10:37:01, 0] lib/util_sock.c:send_smb(769)
Jul 19 10:37:01 Dummy1 smbd[21138]: Error writing 75 bytes to client. -1. (Broken pipe)
Jul 19 10:37:36 Dummy1 smbd[21111]: [2011/07/19 10:37:36, 0] lib/util_sock.c:read_data(534)
Jul 19 10:37:36 Dummy1 smbd[21111]: read_data: read failure for 4 bytes to client 192.168.1.126. Error = Connection reset by peer
Jul 19 10:40:30 Dummy1 smbd[21140]: [2011/07/19 10:40:30, 0] lib/util_sock.c:read_data(534)
Jul 19 10:40:30 Dummy1 smbd[21140]: read_data: read failure for 4 bytes to client 192.168.1.21. Error = Connection reset by peer
Jul 19 10:40:30 Dummy1 smbd[21140]: [2011/07/19 10:40:30, 0] lib/util_sock.c:write_data(562)
Jul 19 10:40:30 Dummy1 smbd[21140]: write_data: write failure in writing to client 192.168.1.21. Error Broken pipe
Jul 19 10:40:30 Dummy1 smbd[21140]: [2011/07/19 10:40:30, 0] lib/util_sock.c:send_smb(769)
Jul 19 10:40:30 Dummy1 smbd[21140]: Error writing 75 bytes to client. -1. (Broken pipe)
Jul 19 10:45:20 Dummy1 smbd[21142]: [2011/07/19 10:45:20, 0] lib/util_sock.c:read_data(534)
Jul 19 10:45:20 Dummy1 smbd[21142]: read_data: read failure for 4 bytes to client 192.168.1.21. Error = Connection reset by peer
Jul 19 10:45:20 Dummy1 smbd[21142]: [2011/07/19 10:45:20, 0] lib/util_sock.c:write_data(562)
Jul 19 10:45:20 Dummy1 smbd[21142]: write_data: write failure in writing to client 192.168.1.21. Error Broken pipe
Jul 19 10:45:20 Dummy1 smbd[21142]: [2011/07/19 10:45:20, 0] lib/util_sock.c:send_smb(769)
Jul 19 10:45:20 Dummy1 smbd[21142]: Error writing 75 bytes to client. -1. (Broken pipe)
Jul 19 10:47:30 Dummy1 kernel: nfs: server 192.168.1.78 not responding, still trying
Jul 19 10:47:30 Dummy1 kernel: nfs: server 192.168.1.78 not responding, still trying
Jul 19 10:47:55 Dummy1 kernel: nfs: server 192.168.1.78 OK
Jul 19 10:47:55 Dummy1 kernel: nfs: server 192.168.1.78 OK
Jul 19 10:48:22 Dummy1 smbd[21069]: [2011/07/19 10:48:22, 0] lib/util_sock.c:read_data(534)
Jul 19 10:48:22 Dummy1 smbd[21069]: read_data: read failure for 4 bytes to client 192.168.1.129. Error = Connection reset by peer
Jul 19 10:48:22 Dummy1 smbd[21069]: [2011/07/19 10:48:22, 0] lib/util_sock.c:write_data(562)
Jul 19 10:48:22 Dummy1 smbd[21069]: write_data: write failure in writing to client 192.168.1.129. Error Broken pipe
Jul 19 10:48:22 Dummy1 smbd[21069]: [2011/07/19 10:48:22, 0] lib/util_sock.c:send_smb(769)
Jul 19 10:48:22 Dummy1 smbd[21069]: Error writing 75 bytes to client. -1. (Broken pipe)
Jul 19 10:48:32 Dummy1 smbd[20990]: [2011/07/19 10:48:32, 0] lib/util_sock.c:read_data(534)
Jul 19 10:48:32 Dummy1 smbd[20990]: read_data: read failure for 4 bytes to client 192.168.1.33. Error = Connection reset by peer
Jul 19 10:48:51 Dummy1 smbd[21172]: [2011/07/19 10:48:51, 0] lib/util_sock.c:read_data(534)
Jul 19 10:48:51 Dummy1 smbd[21172]: read_data: read failure for 4 bytes to client 192.168.1.21. Error = Connection reset by peer
Jul 19 10:48:51 Dummy1 smbd[21172]: [2011/07/19 10:48:51, 0] lib/util_sock.c:write_data(562)
Jul 19 10:48:51 Dummy1 smbd[21172]: write_data: write failure in writing to client 192.168.1.21. Error Broken pipe
Jul 19 10:48:51 Dummy1 smbd[21172]: [2011/07/19 10:48:51, 0] lib/util_sock.c:send_smb(769)
Jul 19 10:48:51 Dummy1 smbd[21172]: Error writing 75 bytes to client. -1. (Broken pipe)
Jul 19 10:52:13 Dummy1 smbd[21139]: [2011/07/19 10:52:13, 0] lib/util_sock.c:read_data(534)
Jul 19 10:52:13 Dummy1 smbd[21139]: read_data: read failure for 4 bytes to client 192.168.1.5. Error = Connection reset by peer