As you said, This arrived after updating from 9.04 to 9.10. I´ve recompiled the sources after patching it and no erros during compilation I don´t know why the system freezes. I know that from Linux kernel 2.6.31 the old net_device structure used in interceptor.c is unsupported. may be any bug implementing the new net_device_ops sctructure on the patch May be the Language Spanish es-ES ? I don´t think so cause in previous version works well. I don´ know the reasson why sorry. Someone can help please? user01@ubdk01:~$ ifconfig eth0 Link encap:Ethernet direcciónHW 00:4f:4e:05:ef:9f Direc. inet:192.168.1.35 Difus.:192.168.1.255 Másc:255.255.255.0 Dirección inet6: fe80::24f:4eff:fe05:ef9f/64 Alcance:Enlace ACTIVO DIFUSIÓN FUNCIONANDO MULTICAST MTU:1500 Métrica:1 Paquetes RX:56 errores:0 perdidos:0 overruns:0 frame:0 Paquetes TX:58 errores:0 perdidos:0 overruns:0 carrier:0 colisiones:0 long.colaTX:1000 Bytes RX:4741 (4.7 KB) TX bytes:6437 (6.4 KB) Interrupción:5 Dirección base: 0xd000 lo Link encap:Bucle local Direc. inet:127.0.0.1 Másc:255.0.0.0 Dirección inet6: ::1/128 Alcance:Anfitrión ACTIVO LOOPBACK FUNCIONANDO MTU:16436 Métrica:1 Paquetes RX:7 errores:0 perdidos:0 overruns:0 frame:0 Paquetes TX:7 errores:0 perdidos:0 overruns:0 carrier:0 colisiones:0 long.colaTX:0 Bytes RX:576 (576.0 B) TX bytes:576 (576.0 B) user01@ubdk01:~$ ping 192.168.1.150 PING 192.168.1.150 (192.168.1.150) 56(84) bytes of data. From 192.168.1.35 icmp_seq=1 Destination Host Unreachable From 192.168.1.35 icmp_seq=2 Destination Host Unreachable From 192.168.1.35 icmp_seq=3 Destination Host Unreachable ^C --- 192.168.1.150 ping statistics --- 4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3015ms , pipe 3 user01@ubdk01:~$ ping 192.168.1.36 PING 192.168.1.36 (192.168.1.36) 56(84) bytes of data. 64 bytes from 192.168.1.36: icmp_seq=1 ttl=128 time=0.248 ms 64 bytes from 192.168.1.36: icmp_seq=2 ttl=128 time=0.231 ms 64 bytes from 192.168.1.36: icmp_seq=3 ttl=128 time=0.228 ms ^C --- 192.168.1.36 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 1998ms rtt min/avg/max/mdev = 0.228/0.235/0.248/0.019 ms user01@ubdk01:~$ vpnclient connect MyCisco Cisco Systems VPN Client Version 4.8.01 (0640) Copyright (C) 1998-2007 Cisco Systems, Inc. All Rights Reserved. Client Type(s): Linux Running on: Linux 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 Config file directory: /etc/opt/cisco-vpnclient Initializing the VPN connection. Contacting the gateway at 80.38.90.196 User Authentication for MyCisco... The server has requested the following information to complete the user authentication: Username [MyCisco]: Password []: Authenticating user. Negotiating security policies. Securing communication channel. Your VPN connection is secure. VPN tunnel information. Client address: 192.168.60.77 Server address: Encryption: 128-bit AES Authentication: HMAC-SHA IP Compression: None NAT passthrough is active on port UDP 4500 Local LAN Access is disabled ------------------------------------------------------------- --from another terminal pinging to a remote host user01@ubdk01:~$ ping 192.168.1.150 PING 192.168.1.150 (192.168.1.150) 56(84) bytes of data. 64 bytes from 192.168.1.150: icmp_seq=1 ttl=126 time=90.2 ms 64 bytes from 192.168.1.150: icmp_seq=2 ttl=126 time=91.1 ms 64 bytes from 192.168.1.150: icmp_seq=3 ttl=126 time=90.0 ms 64 bytes from 192.168.1.150: icmp_seq=4 ttl=126 time=91.1 ms ^C --- 192.168.1.150 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3003ms rtt min/avg/max/mdev = 90.071/90.648/91.155/0.548 ms user01@ubdk01:~$ vpnclient disconnect Cisco Systems VPN Client Version 4.8.01 (0640) Copyright (C) 1998-2007 Cisco Systems, Inc. All Rights Reserved. Client Type(s): Linux Running on: Linux 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 Config file directory: /etc/opt/cisco-vpnclient --------------------------------------------------------------------------------------- Connection works during hours accessing a win system using only terminal-server client and sometimes suddenly (I dont know the reasson) system freezes also Connection may be alive minutes or hours depending on ?? --------------------------------------------------------------------------------------- Disconnecting the VPN connection. Your VPN connection has been terminated. --------------------------------->>>Everything OK by now but when y try to comunicate to my local network, I can't and If I try to start Cisco Vpn Client Now the system Freezes. ------------------------------------------------------- user01@ubdk01:~$ ping 192.168.1.36 PING 192.168.1.36 (192.168.1.36) 56(84) bytes of data. From 192.168.1.35 icmp_seq=1 Destination Host Unreachable From 192.168.1.35 icmp_seq=2 Destination Host Unreachable From 192.168.1.35 icmp_seq=3 Destination Host Unreachable ^C --- 192.168.1.36 ping statistics --- 4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3019ms , pipe 3 user01@ubdk01:~$ ifconfig eth0 Link encap:Ethernet direcciónHW 00:4f:4e:05:ef:9f Direc. inet:192.168.1.35 Difus.:192.168.1.255 Másc:255.255.255.0 Dirección inet6: fe80::24f:4eff:fe05:ef9f/64 Alcance:Enlace ACTIVO DIFUSIÓN FUNCIONANDO MULTICAST MTU:1500 Métrica:1 Paquetes RX:199469 errores:0 perdidos:0 overruns:0 frame:0 Paquetes TX:176908 errores:0 perdidos:0 overruns:0 carrier:0 colisiones:0 long.colaTX:1000 Bytes RX:280065279 (280.0 MB) TX bytes:12897096 (12.8 MB) Interrupción:5 Dirección base: 0xd000 lo Link encap:Bucle local Direc. inet:127.0.0.1 Másc:255.0.0.0 Dirección inet6: ::1/128 Alcance:Anfitrión ACTIVO LOOPBACK FUNCIONANDO MTU:16436 Métrica:1 Paquetes RX:4 errores:0 perdidos:0 overruns:0 frame:0 Paquetes TX:4 errores:0 perdidos:0 overruns:0 carrier:0 colisiones:0 long.colaTX:0 Bytes RX:240 (240.0 B) TX bytes:240 (240.0 B) user01@ubdk01:~$ route Tabla de rutas IP del núcleo Destino Pasarela Genmask Indic Métric Ref Uso Interfaz 192.168.1.0 * 255.255.255.0 U 1 0 0 eth0 link-local * 255.255.0.0 U 1000 0 0 eth0 ^C ------------------------> Spend much time seems to lost DNS access user01@ubdk01:~$ route -n Tabla de rutas IP del núcleo Destino Pasarela Genmask Indic Métric Ref Uso Interfaz 192.168.1.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 ----------------------------------------------------- no way to stop the network interface neither to start it and it doesn´t work.