CVS over SSH does not work with 3.0.2

I'm trying to set up a CVS connection in 3.0.2. We use SSH (:ext with our repository.

I have given the 'jira' user appropriate keys. I can ssh to the CVS server. I can check out the repository on the command line, eg.:
login jira
cvs -d ":ext:jira@tonatiuh:/home/cvsroot" checkout Harmony
And it works just fine. The repository checks out flawlessly.

Trying to use JIRA's admin console to configure CVS I have made the following settings:
Name: Harmony
CVS Root: :ext:jira@tonatiuh:/home/cvsroot
Module name: Harmony
Log retrieval: Automatic
Log file path: /usr/local/jira/temp/cvs-module1.log

This results in the error "Error authenticating with the repository. Could not open ssh connection. Please see underlying message."

There are no status messages on the CVS server. It doesn't look like a connection attempt was ever made. This seems quite an important detail. Normally, the server should emit some kind of log message if a connection attempt was initiated.

As an alternative to making this work, is it possible to have a cron job gather information from CVS and make it available to JIRA? This is a major problem for us. We've been trying to get CVS integration to work ever since 2.6.0 was shipped. I'm sorely disappointed that we are still having so much trouble.

If I look in the logs, this is what I see:

==> catalina.out <==
2004-10-22 13:53:19,170 ERROR [action.admin.vcs.UpdateRepository] Error authenticating with the repository: Could not open ssh connection. Please see underlying error message.
org.netbeans.lib.cvsclient.connection.AuthenticationException: Could not open ssh connection. Please see underlying error message.
at org.netbeans.lib.cvsclient.connection.ExtConnection.openConnection(Unknown Source)
at org.netbeans.lib.cvsclient.connection.ExtConnection.open(Unknown Source)
at com.atlassian.jira.vcs.cvsimpl.CvsRepositoryUtilImpl.openConnectionToRepository(CvsRepositoryUtilImpl.java:367)
at com.atlassian.jira.vcs.cvsimpl.CvsRepositoryUtilImpl.updateCvs(CvsRepositoryUtilImpl.java:284)
at com.atlassian.jira.web.action.admin.vcs.RepositoryActionSupport.testRepository(RepositoryActionSupport.java:273)
at com.atlassian.jira.web.action.admin.vcs.RepositoryActionSupport.checkRepository(RepositoryActionSupport.java:224)
at com.atlassian.jira.web.action.admin.vcs.RepositoryActionSupport.checkPathsAndRepository(RepositoryActionSupport.java:336)
at com.atlassian.jira.web.action.admin.vcs.RepositoryActionSupport.validateRepositoryParameters(RepositoryActionSupport.java:309)
at com.atlassian.jira.web.action.admin.vcs.UpdateRepository.doValidation(UpdateRepository.java:48)
at webwork.action.ActionSupport.validate(ActionSupport.java:371)
at webwork.action.ActionSupport.execute(ActionSupport.java:148)
at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:46)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:131)
at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:186)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:142)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:58)
at com.atlassian.jira.web.filters.SitemeshExcludePathFilter.doFilter(SitemeshExcludePathFilter.java:36)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:168)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.seraph.filter.LoginFilter.doFilter(LoginFilter.java:181)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
at com.atlassian.jira.web.filters.ProfilingAndErrorFilter.doFilter(ProfilingAndErrorFilter.java:25)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.jira.web.filters.ActionCleanupDelayFilter.doFilter(ActionCleanupDelayFilter.java:37)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.johnson.filters.JohnsonFilter.doFilter(JohnsonFilter.java:91)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.jira.web.filters.gzip.GzipFilter.doFilter(GzipFilter.java:64)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at com.atlassian.core.filters.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:36)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2417)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:193)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:781)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:549)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:589)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:666)
at java.lang.Thread.run(Thread.java:534)