部分日志，请高手指教一下系统有什么问题

digal1983

今天用aucat查看了一下 发现一段日志如下：
2006-12-31T04:22:18  84873   2809     root [PROC_execute] execve("/bin/zcat", ["zcat", "./curs_touch.3x.gz"], [data, len=0])
2006-12-31T04:22:18  84874   2810     root [PROC_execute] execve("/bin/bash", ["sh", "-c", "zcat \"./curs_trace.3x.gz\""], [data, len=0])
2006-12-31T04:22:18  84875   2810     root [PROC_execute] execve("/bin/zcat", ["zcat", "./curs_trace.3x.gz"], [data, len=0])
2006-12-31T04:22:18  84876   2811     root [PROC_execute] execve("/bin/bash", ["sh", "-c", "zcat \"./curs_util.3x.gz\""], [data, len=0])
2006-12-31T04:22:18  84877   2811     root [PROC_execute] execve("/bin/zcat", ["zcat", "./curs_util.3x.gz"], [data, len=0])
2006-12-31T04:22:18  84878   2813     root [PROC_execute] execve("/bin/bash", ["sh", "-c", "zcat \"./curs_window.3x.gz\""], [data, len=0])
2006-12-31T04:22:18  84879   2813     root [PROC_execute] execve("/bin/zcat", ["zcat", "./curs_window.3x.gz"], [data, len=0])
2006-12-31T04:22:18  84880   2814     root [PROC_execute] execve("/bin/bash", ["sh", "-c", "zcat \"./curses_version.3x.gz\""], [data, len=0])
2006-12-31T04:22:18  84881   2814     root [PROC_execute] execve("/bin/zcat", ["zcat", "./curses_version.3x.gz"], [data, len=0])
2006-12-31T04:22:18  84882   2815     root [PROC_execute] execve("/bin/bash", ["sh", "-c", "zcat \"./data_ahead.3x.gz\""], [data, len=0])
2006-12-31T04:22:18  84883   2815     root [PROC_execute] execve("/bin/zcat", ["zcat", "./data_ahead.3x.gz"], [data, len=0])
2006-12-31T04:22:18  84884   2816     root [PROC_execute] execve("/bin/bash", ["sh", "-c", "zcat \"./data_behind.3x.gz\""], [data, len=0])
2006-12-31T04:22:18  84885   2816     root [PROC_execute] execve("/bin/zcat", ["zcat", "./data_behind.3x.gz"], [data, len=0])
2006-12-31T04:22:18  84886   2817     root [PROC_execute] execve("/bin/bash", ["sh", "-c", "zcat \"./def_prog_mode.3x.gz\""], [data,

1月1日到2日是空白的 今天3号上班 突然发现系统当掉了。。。其他日志也没有显示  请教一下 这是什么问题

digal1983

还有message里有这样一段显示  
Dec 31 04:02:02 webserver2 syslogd 1.4.1: restart.
Dec 31 04:22:18 webserver2 audbin[2812]: saving binary audit log /var/log/audit.d/bin.1
Dec 31 04:22:18 webserver2 audbin[2812]: threshold 20.00 exceeded for filesystem /var/log/audit.d/. - free blocks down to 19.60%
Dec 31 04:22:18 webserver2 auditd[1186]: Notify command /usr/sbin/audbin -S /var/log/audit.d/save.%u -C -T 20% exited with status 1
Dec 31 04:22:18 webserver2 auditd[1186]: output error
Dec 31 04:22:18 webserver2 auditd[1186]: output error
Dec 31 04:22:18 webserver2 auditd[1186]: output error; suspending execution