how to use apt-key so apt-get stops complaining

Use the last 8 digits apt-get gives you when it complains about keys eg.:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 5ADC2037

(I'm just pasting it here so I can find it again)

xfce=a new lease of life for my not-so-old laptop.

Yes kde4 made my 64bit, 4GB mem, Core2 Duo 2.4GHz (kubuntu 9.04) laptop cry and die on me. For some reason it made X use a lot more memory than I would like.
So a couple of weeks ago I tried out xfce and I can be productive on it now. Although I miss a lot of features, at least I'm not running out of memory so easily and it does not crash so often anymore.
It may not strictly be Kde's fault, but by experimentation I found that xfce is better for me at the moment.

Yet another juicy Alfresco Labs 3.1 stacktrace...

...which kept me busy for a couple of days.
I dumped it here for in case somebody else hits it.
So if you didn't find this post by googling an alfresco exception, you need to move along people, there is nothing to see here.

Without further ado, if you get the following exception:

javax.faces.FacesException: javax.faces.FacesException: Could not retrieve value of component with path : {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /jsp/dialog/container.jsp][Class: javax.faces.component.html.HtmlForm,Id: dialog][Class: javax.faces.component.UINamingContainer,Id: dialog-body][Class: org.alfresco.web.ui.common.component.UIPanel,Id: users-panel][Class: org.alfresco.web.ui.common.component.data.UIRichList,Id: users-list][Class: org.alfresco.web.ui.common.component.data.UIColumn,Id: _idJsp33][Class: javax.faces.component.html.HtmlOutputText,Id: _idJsp35]}
at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:425)
at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:211)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.alfresco.web.app.servlet.AuthenticationFilter.doFilter(AuthenticationFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.apache.jasper.JasperException: javax.faces.FacesException: Could not retrieve value of component with path : {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /jsp/dialog/container.jsp][Class: javax.faces.component.html.HtmlForm,Id: dialog][Class: javax.faces.component.UINamingContainer,Id: dialog-body][Class: org.alfresco.web.ui.common.component.UIPanel,Id: users-panel][Class: org.alfresco.web.ui.common.component.data.UIRichList,Id: users-list][Class: org.alfresco.web.ui.common.component.data.UIColumn,Id: _idJsp33][Class: javax.faces.component.html.HtmlOutputText,Id: _idJsp35]}
at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:535)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:472)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
at org.apache.jsp.jsp.dialog.container_jsp._jspService(container_jsp.java:637)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:419)
... 19 more
Caused by: javax.faces.FacesException: Could not retrieve value of component with path : {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /jsp/dialog/container.jsp][Class: javax.faces.component.html.HtmlForm,Id: dialog][Class: javax.faces.component.UINamingContainer,Id: dialog-body][Class: org.alfresco.web.ui.common.component.UIPanel,Id: users-panel][Class: org.alfresco.web.ui.common.component.data.UIRichList,Id: users-list][Class: org.alfresco.web.ui.common.component.data.UIColumn,Id: _idJsp33][Class: javax.faces.component.html.HtmlOutputText,Id: _idJsp35]}
at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getStringValue(RendererUtils.java:227)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase.renderOutput(HtmlTextRendererBase.java:69)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase.encodeEnd(HtmlTextRendererBase.java:57)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
at org.alfresco.web.ui.common.Utils.encodeRecursive(Utils.java:173)
at org.alfresco.web.ui.common.Utils.encodeRecursive(Utils.java:168)
at org.alfresco.web.ui.common.renderer.data.RichListRenderer$DetailsViewRenderer.renderListRow(RichListRenderer.java:292)
at org.alfresco.web.ui.common.renderer.data.RichListRenderer.encodeChildren(RichListRenderer.java:118)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527)
at javax.faces.webapp.UIComponentTag.encodeChildren(UIComponentTag.java:483)
at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:364)
at org.apache.jsp.jsp.users.users_jsp._jspx_meth_a_005frichList_005f0(users_jsp.java:659)
at org.apache.jsp.jsp.users.users_jsp._jspService(users_jsp.java:273)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
... 42 more
Caused by: javax.faces.el.EvaluationException: Cannot get value for expression '#{r.sizeLatest}'
at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:405)
at javax.faces.component.UIOutput.getValue(UIOutput.java:80)
at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getStringValue(RendererUtils.java:223)
... 57 more
Caused by: javax.faces.el.EvaluationException: Exception getting value of property sizeLatest of base of type : org.alfresco.web.bean.repository.MapNode
at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:99)
at org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate(ELParserHelper.java:535)
at org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:386)
... 59 more
Caused by: java.lang.NullPointerException
at java.io.StringReader.(StringReader.java:33)
at org.alfresco.repo.search.impl.lucene.ADMLuceneIndexerImpl.indexProperty(ADMLuceneIndexerImpl.java:1037)
at org.alfresco.repo.search.impl.lucene.ADMLuceneIndexerImpl.createDocuments(ADMLuceneIndexerImpl.java:606)
at org.alfresco.repo.search.impl.lucene.AbstractLuceneIndexerImpl.indexImpl(AbstractLuceneIndexerImpl.java:632)
at org.alfresco.repo.search.impl.lucene.AbstractLuceneIndexerImpl.indexImpl(AbstractLuceneIndexerImpl.java:657)
at org.alfresco.repo.search.impl.lucene.AbstractLuceneIndexerImpl.flushPending(AbstractLuceneIndexerImpl.java:789)
at org.alfresco.repo.search.impl.lucene.ADMLuceneIndexerImpl.doPrepare(ADMLuceneIndexerImpl.java:1591)
at org.alfresco.repo.search.impl.lucene.AbstractLuceneIndexerImpl.prepare(AbstractLuceneIndexerImpl.java:472)
at org.alfresco.repo.search.impl.lucene.AbstractLuceneIndexerAndSearcherFactory.prepare(AbstractLuceneIndexerAndSearcherFactory.java:783)
at org.alfresco.repo.transaction.AlfrescoTransactionSupport$TransactionSynchronizationImpl.beforeCommit(AlfrescoTransactionSupport.java:661)
at org.springframework.transaction.support.TransactionSynchronizationUtils.triggerBeforeCommit(TransactionSynchronizationUtils.java:48)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.triggerBeforeCommit(AbstractPlatformTransactionManager.java:835)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:645)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:314)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:117)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy176.getUserUsage(Unknown Source)
at org.alfresco.web.bean.users.UsersBeanProperties.getUserUsage(UsersBeanProperties.java:290)
at org.alfresco.web.bean.users.UsersDialog$1.get(UsersDialog.java:410)
at org.alfresco.web.bean.repository.QNameNodeMap.get(QNameNodeMap.java:117)
at org.alfresco.web.bean.repository.MapNode.get(MapNode.java:157)
at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:81)
... 62 more

nice, hey.

I think its reported here
https://issues.alfresco.com/jira/browse/ETHREEOH-1846

To fix it, I built a newer version of org.alfresco.repo.search.impl.lucene.ADMLuceneIndexerImpl from the svn sources, and dumped it in the alfresco/WEB-INF/classes and it works!