每天当机一次，有日志，希望高手帮忙分析

CODE:

[Wed Oct 22 16:30:57 2008] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)(这个好像是加载tomcat？)
[Wed Oct 22 16:30:57 2008] [notice] Digest: generating secret for digest authentication ...(和ZendOptimizer有关？)
[Wed Oct 22 16:30:57 2008] [notice] Digest: done
[Wed Oct 22 16:31:00 2008] [notice] Apache configured -- resuming normal operations(也是tomcat？)

CODE:

Oct 22 08:00:22 localhost kernel: [IPTABLES INPUT] : IN=ppp0 OUT= MAC= SRC=123.52.183.64 DST=125.3.93.98 LEN=52 TOS=0x00 PREC=0x00 TTL=45 ID=34837 DF PROTO=TCP SPT=2705 DPT=21 WINDOW=65535 RES=0x00 SYN URGP=0

CODE:

Oct 22 10:29:07 localhost pppd[2127]: No response to 3 echo-requests
Oct 22 10:29:07 localhost pppd[2127]: Serial link appears to be disconnected.
Oct 22 10:29:22 localhost pppd[2127]: Connect time 815.3 minutes.
Oct 22 10:29:22 localhost pppd[2127]: Sent 1095179918 bytes, received 4140331053 bytes.
Oct 22 10:33:26 localhost pppoe[2131]: Session 18440 terminated -- received PADT from peer
Oct 22 10:33:32 localhost pppoe[2131]: Sent PADT
Oct 22 10:34:18 localhost pppd[2127]: Modem hangup
Oct 22 10:34:18 localhost pppd[2127]: Connection terminated.
Oct 22 10:35:12 localhost ntpd[2390]: sendto(220.130.158.54) (fd=19): Invalid argument
Oct 22 10:37:28 localhost pppd[2127]: Exit.
Oct 22 10:42:15 localhost adsl-connect: ADSL connection lost; attempting re-connection.
Oct 22 10:43:56 localhost ntpd[2390]: sendto(220.130.158.51) (fd=19): Invalid argument
Oct 22 10:43:58 localhost ntpd[2390]: sendto(220.130.158.72) (fd=19): Invalid argument
Oct 22 10:44:13 localhost ntpd[2390]: sendto(220.130.158.52) (fd=19): Invalid argument
Oct 22 10:52:17 localhost ntpd[2390]: sendto(220.130.158.54) (fd=19): Invalid argument
Oct 22 11:01:00 localhost ntpd[2390]: sendto(220.130.158.51) (fd=19): Invalid argument
Oct 22 11:01:04 localhost ntpd[2390]: sendto(220.130.158.72) (fd=19): Invalid argument
Oct 22 11:01:16 localhost ntpd[2390]: sendto(220.130.158.52) (fd=19): Invalid argument
Oct 22 11:09:21 localhost ntpd[2390]: sendto(220.130.158.54) (fd=19): Invalid argument
Oct 22 11:18:05 localhost ntpd[2390]: sendto(220.130.158.51) (fd=19): Invalid argument
Oct 22 11:18:07 localhost ntpd[2390]: sendto(220.130.158.72) (fd=19): Invalid argument
Oct 22 11:18:20 localhost ntpd[2390]: sendto(220.130.158.52) (fd=19): Invalid argument
Oct 22 11:21:45 localhost pppd[28095]: pppd 2.4.4 started by root, uid 0
Oct 22 11:24:40 localhost pppd[28095]: Using interface ppp0
Oct 22 11:26:24 localhost ntpd[2390]: sendto(220.130.158.54) (fd=19): Invalid argument
Oct 22 11:27:47 localhost pppd[28095]: Connect: ppp0 <--> /dev/pts/0
Oct 22 11:27:47 localhost pppoe[28127]: PPP session is 39789
Oct 22 11:28:21 localhost pppoe[28127]: Session 39789 terminated -- received PADT from peer
Oct 22 11:28:21 localhost pppoe[28127]: Sent PADT
Oct 22 11:30:49 localhost pppd[28095]: Modem hangup
Oct 22 11:30:49 localhost pppd[28095]: Connection terminated.
Oct 22 11:33:28 localhost pppd[28095]: Exit.