I googled around and here some good(?) news, at least somebody get
around the problem:

http://forum.java.sun.com/thread.jspa?threadID=307252&tstart=210

on of solution is :
-- cut --
now I use jdk1.3.1_06 with hospot -server
and it works perfectly (and faster)
-- end cut ---

another one was a hardware problem:
-- cut --
 Some part
of the computer seemed to be not compatible with the
FSB133 standard. So I reduced the system to FSB100.
No signal 11 since that time :-
-- end cut --

and here another issue with java:
-- cut --
In this case, it was happening during the compilation of a reasonably
large JSP. A colleague found out that there was a known issue with
this version of javac compiling large methods (>64Kb), which tends to
happen when you have a large JSP getting compiled into a single
service() method.
-- end cut --
--- Amit Gupta <[EMAIL PROTECTED]> wrote:

> I am facing similar problem on user mode Linux.
> 
> Amit Gupta
> Mobile: 91-9818052171
> Yahoo IM: amitguptainn
> MSN IM : amitguptainn
> 
> -----Original Message-----
> From: Rodrigo Schmidt [mailto:[EMAIL PROTECTED] 
> Sent: Tuesday, December 28, 2004 5:05 PM
> To: Tomcat Users List
> Subject: Re: JVM Crash
> 
> Amit, I am using a dedicated server.
> 
> Rodrigo
> 
> Amit Gupta wrote:
> 
> >You are using User mode Linux or dedicated server?
> >
> >Amit Gupta
> >Mobile: 91-9818052171
> >
> >-----Original Message-----
> >From: Rodrigo Schmidt [mailto:[EMAIL PROTECTED] 
> >Sent: Monday, December 27, 2004 11:18 PM
> >To: tomcat-user@jakarta.apache.org
> >Subject: JVM Crash
> >
> >Hello all,
> >
> >I deployed Atlassian Jira Enterprise 3.0.3 in Tomcat 5.0.28 and I 
> >experienced two random JVM crashes in a period of one month. The
> strange 
> >part is that the crashes occured when the application was at a
> very low 
> >load, doing almost nothing.
> >I searched the archives for this topic, but I still can't figure
> out 
> >what could have caused these crashes.
> >I have no idea whether they are related to Jira, Tomcat, J2SDK or 
> >RedHat. I would like to isolate the problem, so that I can ask the
> 
> >proper vendor for support.
> >Below I will post information about my system and the JVM error
> logs, 
> >sorry for the long message.
> >Any help is greatly appreciated, thanks a lot.
> >
> >Rodrigo
> >
> >System:
> >Linux 2.4.21-4.EL #1 Fri Oct 3 18:13:58 EDT 2003 i686 i686 i386
> GNU/Linux
> >Red Hat Enterprise Linux AS release 3 (Taroon)
> >Tomcat 5.0.28
> >java version "1.4.2_06"
> >Java(TM) 2 Runtime Environment, Standard Edition (build
> 1.4.2_06-b03)
> >Java HotSpot(TM) Server VM (build 1.4.2_06-b03, mixed mode)
> >JAVA_OPTS="-server -Xmx512m"
> >1GB RAM
> >CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz stepping 09
> >
> >Error log 1:
> >Unexpected Signal : 11 occurred at PC=0xB7289E78
> >Function=(null)
> >Library=/usr/local/j2sdk1.4.2_06/jre/lib/i386/server/libjvm.so
> >
> >NOTE: We are unable to locate the function name symbol for the
> error
> >      just occurred. Please refer to release documentation for
> possible
> >      reason and solutions.
> >
> >
> >Current Java thread:
> >        at java.lang.String.intern(Native Method)
> >        at java.lang.Class.searchMethods(Class.java:1877)
> >        at java.lang.Class.getDeclaredMethod(Class.java:1262)
> >        at 
>
>org.apache.commons.logging.impl.LogFactoryImpl.isJdk14Available(LogFactoryImpl.java:489)
> >        at 
>
>org.apache.commons.logging.impl.LogFactoryImpl.getLogClassName(LogFactoryImpl.java:331)
> >        at 
>
>org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:368)
> >        at 
>
>org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
> >        at 
>
>org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
> >        at 
>
>org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
> >        at
> org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
> >        at 
>
>org.apache.commons.beanutils.ConvertUtilsBean.<init>(ConvertUtilsBean.java:130)
> >        at 
>
>org.apache.commons.beanutils.BeanUtilsBean.<init>(BeanUtilsBean.java:110)
> >        at 
>
>org.apache.commons.beanutils.BeanUtilsBean$1.initialValue(BeanUtilsBean.java:68)
> >        at 
>
>org.apache.commons.beanutils.ContextClassLoaderLocal.get(ContextClassLoaderLocal.java:80)
> >        - locked <0x925030d0> (a 
> >org.apache.commons.beanutils.BeanUtilsBean$1)
> >        at 
>
>org.apache.commons.beanutils.BeanUtilsBean.getInstance(BeanUtilsBean.java:78)
> >        - locked <0xaeeb91a0> (a java.lang.Class)
> >        at 
>
>org.apache.commons.beanutils.ConvertUtilsBean.getInstance(ConvertUtilsBean.java:115)
> >        at 
>
>org.apache.commons.beanutils.ConvertUtils.convert(ConvertUtils.java:217)
> >        at 
>
>org.apache.commons.digester.CallMethodRule.end(CallMethodRule.java:457)
> >        at org.apache.commons.digester.Rule.end(Rule.java:276)
> >        at 
>
>org.apache.commons.digester.Digester.endElement(Digester.java:1058)
> >        at 
> >org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown
> Source)
> >        at 
>
>org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown
> 
> >Source)
> >        at 
>
>org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
> 
> >Source)
> >        at 
>
>org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
> 
> >Source)
> >        at
> org.apache.xerces.parsers.XML11Configuration.parse(Unknown 
> >Source)
> >        at
> org.apache.xerces.parsers.XML11Configuration.parse(Unknown 
> >Source)
> >        at org.apache.xerces.parsers.XMLParser.parse(Unknown
> Source)
> >        at
> org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
> >        at
> org.apache.commons.digester.Digester.parse(Digester.java:1548)
> >        at 
>
>org.apache.catalina.startup.ContextConfig.defaultConfig(ContextConfig.java:515)
> >        - locked <0x92641798> (a
> org.apache.commons.digester.Digester)
> >        at 
>
>org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:623)
> >        - locked <0x93a28f98> (a
> org.apache.catalina.startup.ContextConfig)
> >        at 
>
>org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:216)
> >        at 
>
>org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
> >        at 
>
>org.apache.catalina.core.StandardContext.start(StandardContext.java:4290)
> >        - locked <0x93a119f0> (a
> org.apache.catalina.core.StandardContext)
> >        at 
>
>org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823)
> >        - locked <0x92598d40> (a java.util.HashMap)
> >        at 
>
>org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807)
> >        at 
>
>org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)
> >        at 
>
>org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:277)
> >        - locked <0x925fd318> (a 
> >org.apache.catalina.core.StandardHostDeployer)
> >        at 
>
>org.apache.catalina.core.StandardHost.install(StandardHost.java:832)
> >        at 
>
>org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:701)
> >        at 
>
>org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432)
> >        at
> org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)
> >        at 
>
>org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349)
> >        at 
>
>org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
> >        at 
>
>org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)
> >        - locked <0x925939a0> (a
> org.apache.catalina.core.StandardHost)
> >        at 
> >org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
> >        - locked <0x925939a0> (a
> org.apache.catalina.core.StandardHost)
> >        at 
>
>org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
> >        - locked <0x9256ca40> (a
> org.apache.catalina.core.StandardEngine)
> >        at 
>
>org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
> >        at 
>
>org.apache.catalina.core.StandardService.start(StandardService.java:480)
> >        - locked <0x9256ca40> (a
> org.apache.catalina.core.StandardEngine)
> 
=== message truncated ===



                
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