On a -- well patched -- OES2 Linux server, iPrint (or at least its iManager plugin) went suddenly mad: every time I try to manage an iPrint resource, iManager displays this error message:
java.net.ConnectException: Connection refused
IPP Error: 0x40001

At the same time, the lines pasted below get added to /var/opt/novell/tomcat5/logs/catalina.out

I found some related TIDs and newsgroup posts, but
- they are old
- they apply to NetWare 6.5 and OES1 Linux only
- they seem to be useless for my problem

Any ideas?

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< beginning of log entries <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
IPPLib-> Error Code: 40001
IPPLib-> Error message: Unable to send IPP Request
[Root exception: java.net.ConnectException: Connection refused] Unable to send IPP Request
at com.novell.service.iPrint.ipp.IPPHttp.httpSendPost (Unknown Source)
at com.novell.service.iPrint.ipp.IPPHttp.sendSimpleRe quest(Unknown Source)
at com.novell.service.iPrint.ipp.IPPService.setDefaul t(Unknown Source)
at com.novell.service.iPrint.PrintManager.startup(Unk nown Source)
at com.novell.admin.iPrint.ManagerControlModel.startu pManager(Unknown Source)
at com.novell.admin.iPrint.ManagerControlPage.cache(U nknown Source)
at com.novell.emframe.dev.PropertyBook.doShow(Propert yBook.java:858)
at com.novell.emframe.dev.PropertyBook.execute(Proper tyBook.java:151)
at com.novell.emframe.dev.Task.execute(Task.java:505)
at com.novell.nps.gadgetManager.BaseGadgetInstance.pr ocessRequest(BaseGadgetInstance.java:849)
at com.novell.nps.gadgetManager.BaseGadgetInstance.ha ndleAction(BaseGadgetInstance.java:2375)
at com.novell.nps.gadgetManager.GadgetManager.process InstanceRequest(GadgetManager.java:1606)
at com.novell.nps.gadgetManager.GadgetManager.process ServiceRequest(GadgetManager.java:1062)
at com.novell.nps.PortalServlet.handleFrameService(Po rtalServlet.java:505)
at com.novell.nps.PortalServlet.processRequest(Portal Servlet.java:373)
at com.novell.nps.PortalServlet.doPost(PortalServlet. java:279)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:763)
at com.novell.emframe.fw.servlet.AuthenticatorServlet .service(AuthenticatorServlet.java:322)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:856)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invo keInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.authenticator.AuthenticatorBas e.invoke(AuthenticatorBase.java:540)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invo keNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(Co yoteAdapter.java:162)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyo teHandler.java:300)
at org.apache.jk.common.HandlerRequest.invoke(Handler Request.java:374)
at org.apache.jk.common.ChannelSocket.invoke(ChannelS ocket.java:743)
at org.apache.jk.common.ChannelSocket.processConnecti on(ChannelSocket.java:675)
at org.apache.jk.common.SocketConnection.runIt(Channe lSocket.java:866)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:810)
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl .java:389)
at java.net.PlainSocketImpl.connectToAddress(PlainSoc ketImpl.java:250)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.j ava:237)
at java.net.Socket.connect(Socket.java:540)
at java.net.Socket.connect(Socket.java:490)
at sun.net.NetworkClient.doConnect(NetworkClient.java :180)
at sun.net.http://www.http.HttpClient.openServe...lient.java:403)
at sun.net.http://www.http.HttpClient.openServe...lient.java:521)
at com.ibm.net.ssl.www2.protocol.https.b.<init>(b.jav a:20)
at com.ibm.net.ssl.www2.protocol.https.b.a(b.java:119 )
at com.ibm.net.ssl.www2.protocol.https.c.getNewHttpCl ient(c.java:45)

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> end of log entries >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>