Падают интерфейсы :(

С такой исходной информацией трудно сказать...... в логах есть чего ???

В логах отыскал только:

fetchmail: 1 message for user at mail.mail.ru (109676 octets).
fetchmail: reading message 1 of 1 (109676 octets) fetchmail: flushed
fetchmail: 5.3.1 querying mail.mail.ru (protocol POP3) at Sat, 20 May 2000 20:43:49 +0400 (MSD)
fetchmail: 5.3.1 querying mail.mail.ru (protocol POP3) at Sat, 20 May 2000 20:50:47 +0400 (MSD)
fetchmail: 5.3.1 querying mail.mail.ru (protocol POP3) at Sat, 20 May 2000 20:55:57 +0400 (MSD)
fetchmail: 5.3.1 querying mail.mail.ru (protocol POP3) at Sat, 20 May 2000 21:03:49 +0400 (MSD)
fetchmail: 5.3.1 querying mail.mail.ru (protocol POP3) at Sat, 20 May 2000 21:09:00 +0400 (MSD)
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: 5.3.1 querying mail.mail.ru (protocol POP3) at Sat, 20 May 2000 22:24:20 +0400 (MSD)
fetchmail: 5.3.1 querying mail.mail.ru (protocol POP3) at Sat, 20 May 2000 22:29:28 +0400 (MSD)
fetchmail: skipping poll of mail.mail.ru, eth2 inactive
fetchmail: 5.3.1 querying mail.mail.ru (protocol POP3) at Sat, 20 May 2000 22:39:35 +0400 (MSD)
fetchmail: skipping poll of mail.mail.ru, eth2 inactive

как оказалось падают чаще, а потом сами оживают.

И еще в messages обнаружил:
May 21 04:02:01 host syslogd 1.3-3: restart.
May 21 04:03:43 host PAM_pwdb[3034]: (su) session opened for user news by (uid=0)
May 21 04:03:44 host PAM_pwdb[3034]: (su) session closed for user news
May 21 04:41:59 host named[682]: Cleaned cache of 0 RRs

что означают строки 2 и 3?