Tomcat 5.5.27服务器，web服务运作僵尸，页面不能访问

最近，现网服务器出现僵尸的情况？请大家帮忙讨论一下。

?

tomcat版本：5.5.27

报错日志：

看 catalina_20120928 日志， 2012-9-28 15:39:37 时间点前就异常了，日志也不写了；报了

ERROR: ld.so: object '/lib/FileProtect.so' from /etc/ld.so.preload cannot be preloaded: ignored.

?

然后重启，就OK了，可是运行一段时间又出现服务僵死，页面访问不了（没响应）。

……………..

- Exec[0]: Login.getOnlineStat()

- Exec[0]: Login.doEasyLogin()

- Exec[0]: Login.doEasyLogin()

- Exec[0]: Login.doLogin()

- Exec[0]: Login.getOnlineStat()

- Exec[0]: Login.doEasyLogin()

- Exec[0]: Login.doEasyLogin()

- Exec[0]: Login.doEasyLogin()

- Exec[0]: Login.doEasyLogin()

- Exec[0]: Login.doLogin()

string:method=initPageData

toLowerCase:method=initpagedata

Normalize:method=initpagedata

2012-9-28 15:19:34 org.apache.tomcat.util.threads.ThreadPool logFull

严重 : All threads (150) are currently busy, waiting. Increase maxThreads (150) or check the servlet status

- Exec[0]: Login.doLogin()

- Exec[0]: Login.doLogin()

ERROR: ld.so: object '/lib/FileProtect.so' from /etc/ld.so.preload cannot be preloaded: ignored.

ERROR: ld.so: object '/lib/FileProtect.so' from /etc/ld.so.preload cannot be preloaded: ignored.

2012-9-28 15:39:37 org.apache.catalina.core.AprLifecycleListener lifecycleEvent

信息 : The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /home/jdk1.5.0_15/jre/lib/i386/server:/home/jdk1.5.0_15/jre/lib/i386:/home/jdk1.5.0_15/jre/../lib/i386

2012-9-28 15:39:37 org.apache.coyote.http11.Http11BaseProtocol init

信息 : Initializing Coyote HTTP/1.1 on http-8080

2012-9-28 15:39:37 org.apache.catalina.startup.Catalina load

信息 : Initialization processed in 889 ms

2012-9-28 15:39:37 org.apache.catalina.core.StandardService start

信息 : Starting service Catalinacatalina_20120928