Problemas na rede

[Andrex]

Bom dia pessoal, estou com o seguinte problema:

Durante o dia o meu servidor para a rede, parece que algum serviço de rede dele para e como é o controlador de domínio toda a rede cai, inclusive a internet que é distribuida por um roteador D-Link.

Tenho os seguintes logs de erro:

Oct 13 21:19:09 serverlinux zmd: NetworkManagerModule (WARN): Failed to connect to NetworkManager
Oct 13 21:20:50 serverlinux zmd: Daemon (WARN): Not starting remote web server
Oct 13 22:01:00 serverlinux syslog-ng[2607]: STATS: dropped 0
Oct 13 22:19:09 serverlinux zmd: ShutdownManager (WARN): Preparing to sleep...
Oct 13 22:19:09 serverlinux zmd: ShutdownManager (WARN): Going to sleep, waking up at 10/14/2007 21:09:09
Oct 13 23:01:00 serverlinux syslog-ng[2607]: STATS: dropped 0
Oct 14 00:01:00 serverlinux syslog-ng[2607]: STATS: dropped 0
Oct 14 01:01:00 serverlinux syslog-ng[2607]: STATS: dropped 0
Oct 14 02:01:00 serverlinux syslog-ng[2607]: STATS: dropped 0
Oct 14 03:01:00 serverlinux syslog-ng[2607]: STATS: dropped 0
Oct 14 03:20:51 serverlinux zmd: NetworkManagerModule (WARN): Failed to connect to NetworkManager
Oct 14 03:22:32 serverlinux zmd: Daemon (WARN): Not starting remote web server