When someone which the Jenkins system has trouble authenticating against AD (see issue: https://issues.jenkins-ci.org/browse/JENKINS-11990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel) checks in code that triggers a build, the build hangs, even after a successful completion. This locks any further builds by that project or any builds that are locked out by that project running from building until Jenkins is restarted.

The log contains the following information which shows the job completed successfully then later throws the LDAP exception.

INFO: SCM changes detected in ClaimApplicationLog. Triggering #95
Jan 5, 2012 8:07:33 AM hudson.model.Run run
INFO: ClaimApplicationLog #95 main build action completed: SUCCESS
Jan 5, 2012 8:07:33 AM hudson.plugins.analysis.core.BuildResult loadResult
INFO: Loaded data file D:\HudsonWorkingDirectory\jobs\ClaimApplicationLog\builds\2012-01-05_02-31-30\compiler-warnings.xml for build 94
Jan 5, 2012 8:07:37 AM com.mtvi.plateng.hudson.regex.Configuration findMailAddressFor
WARNING: RegExMailAddressResolver configuration for regex null and email pattern null is not valid.
.....
Jan 5, 2012 8:18:58 AM hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider retrieveUser
WARNING: Failed to retrieve user information for XXXXXXXXX
javax.naming.AuthenticationException: [LDAP: error code 49 - 80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 525, vece|]; remaining name 'DC=XXXXX,DC=XXXXX,DC=net'
at com.sun.jndi.ldap.LdapCtx.mapErrorCode(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.processReturnCode(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.processReturnCode(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.connect(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.ensureOpen(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.ensureOpen(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.doSearch(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.searchAux(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.c_search(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.c_search(Unknown Source)
at com.sun.jndi.toolkit.ctx.ComponentDirContext.p_search(Unknown Source)
at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(Unknown Source)
at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(Unknown Source)
at hudson.plugins.active_directory.LDAPSearchBuilder.search(LDAPSearchBuilder.java:52)
at hudson.plugins.active_directory.LDAPSearchBuilder.searchOne(LDAPSearchBuilder.java:42)
at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:140)
at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:105)
at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:64)
at org.acegisecurity.providers.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:119)
at org.acegisecurity.providers.ProviderManager.doAuthentication(ProviderManager.java:195)
at org.acegisecurity.AbstractAuthenticationManager.authenticate(AbstractAuthenticationManager.java:45)
at org.acegisecurity.ui.webapp.AuthenticationProcessingFilter.attemptAuthentication(AuthenticationProcessingFilter.java:71)
at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:252)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:61)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244)
at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150)
at java.lang.Thread.run(Unknown Source)
Jan 5, 2012 8:18:58 AM hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider retrieveUser
org.acegisecurity.BadCredentialsException: Failed to retrieve user information for sgupta30; nested exception is javax.naming.AuthenticationException: [LDAP: error code 49 - 80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 525, vece|]; remaining name 'DC=XXXXX,DC=XXXXX,DC=net'
at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:179)
at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:105)
at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:64)
at org.acegisecurity.providers.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:119)
at org.acegisecurity.providers.ProviderManager.doAuthentication(ProviderManager.java:195)
at org.acegisecurity.AbstractAuthenticationManager.authenticate(AbstractAuthenticationManager.java:45)
at org.acegisecurity.ui.webapp.AuthenticationProcessingFilter.attemptAuthentication(AuthenticationProcessingFilter.java:71)
at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:252)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:61)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244)
at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.naming.AuthenticationException: [LDAP: error code 49 - 80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 525, vece|]; remaining name 'DC=XXXXX,DC=XXXXX,DC=net'
at com.sun.jndi.ldap.LdapCtx.mapErrorCode(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.processReturnCode(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.processReturnCode(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.connect(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.ensureOpen(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.ensureOpen(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.doSearch(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.searchAux(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.c_search(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.c_search(Unknown Source)
at com.sun.jndi.toolkit.ctx.ComponentDirContext.p_search(Unknown Source)
at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(Unknown Source)
at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(Unknown Source)
at hudson.plugins.active_directory.LDAPSearchBuilder.search(LDAPSearchBuilder.java:52)
at hudson.plugins.active_directory.LDAPSearchBuilder.searchOne(LDAPSearchBuilder.java:42)
at hudson.plugins.active_directory.ActiveDirectoryUnixAuthenticationProvider.retrieveUser(ActiveDirectoryUnixAuthenticationProvider.java:140)
... 26 more

The job then retains a running thread on the Master and when you drill into the Console Output you see the Ajax spinning wheel showing that the system still has not completed whatever it is doing even though the job looks like it completed. The only way to clear the lock is to restart Jenkins.