Fatal error when upgrade.

We get the following error when upgrading our server to 4.0.1 from 3.13.5 :

We are not sure what is it :

Voilà

2010-01-29 21:16:01,189 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[atlassian.jira.upgrade.UpgradeManagerImpl] Setting current build number on to 428
2010-01-29 21:16:01,197 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[atlassian.jira.upgrade.UpgradeManagerImpl] Performing Upgrade Task:
Migrating the old JIRA UI colors to the new JIRA 4.0 colors
2010-01-29 21:16:01,197 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[jira.upgrade.tasks.UpgradeTask_Build436] Custom color detected for jira.lf.menu.bgcolour : #415a68
2010-01-29 21:16:01,198 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[jira.upgrade.tasks.UpgradeTask_Build436] Customisations to the Look And Feel have been detected. Not migrating to new scheme.
2010-01-29 21:16:01,275 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[atlassian.jira.upgrade.UpgradeManagerImpl] Upgrade Task: 'Migrating the old JIRA UI colors to the new JIRA 4.0 colors' succeeded
2010-01-29 21:16:01,276 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[atlassian.jira.upgrade.UpgradeManagerImpl] Setting current build number on to 436
2010-01-29 21:16:01,285 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[atlassian.jira.upgrade.UpgradeManagerImpl] Performing Upgrade Task:
Initialising dashboard version numbers for optimistic locking.
2010-01-29 21:16:01,311 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[jira.upgrade.tasks.UpgradeTask_Build437] Initialised 25 dashboard versions to 0.
2010-01-29 21:16:01,314 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[atlassian.jira.upgrade.UpgradeManagerImpl] Upgrade Task: 'Initialising dashboard version numbers for optimistic locking.' succeeded
2010-01-29 21:16:01,314 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[atlassian.jira.upgrade.UpgradeManagerImpl] Setting current build number on to 437
2010-01-29 21:16:01,321 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 INFO admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[atlassian.jira.upgrade.UpgradeManagerImpl] Performing Upgrade Task:
Converts Legacy Portlets to Gadgets including user preferences.
2010-01-29 21:16:01,373 http-mdc-tomcat-jira27%2F10.129.2.228-80-3 ERROR admin 76291x8x1 1enly07 /secure/ConfirmInstallationWithLicense.jspa
[atlassian.jira.upgrade.UpgradeManagerImpl] Exception thrown during
upgrade: org.ofbiz.core.entity.GenericEntityException: while inserting:
[GenericEntity:GadgetUserPreference][id,10000][userprefvalue,30][userprefkey,days][portletconfiguration,10706]
(SQL Exception while executing the following:INSERT INTO gadgetuserpreference (ID, PORTLETCONFIGURATION, USERPREFKEY,
USERPREFVALUE) VALUES (?, ?, ?, ?) (Duplicate entry '10000' for key 1))
com.atlassian.jira.exception.DataAccessException:
org.ofbiz.core.entity.GenericEntityException: while inserting:
[GenericEntity:GadgetUserPreference][id,10000][userprefvalue,30][userprefkey,days][portletconfiguration,10706]
(SQL Exception while executing the following:INSERT INTO gadgetuserpreference (ID, PORTLETCONFIGURATION, USERPREFKEY,
USERPREFVALUE) VALUES (?, ?, ?, ?) (Duplicate entry '10000' for key 1))
at
com.atlassian.jira.ofbiz.DefaultOfBizDelegator.createValue(DefaultOfBizDelegator.java:352)
at
com.atlassian.jira.upgrade.tasks.UpgradeTask_Build438.doUpgrade(UpgradeTask_Build438.java:112)
at
com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeTaskSucess(UpgradeManagerImpl.java:508)
at
com.atlassian.jira.upgrade.UpgradeManagerImpl.runUpgradeTasks(UpgradeManagerImpl.java:419)
at
com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgrade(UpgradeManagerImpl.java:356)
at
com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeeded(UpgradeManagerImpl.java:307)
at
com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeededAndAllowed(UpgradeManagerImpl.java:246)
at
com.atlassian.jira.upgrade.UpgradeLauncher.checkIfUpgradeNeeded(UpgradeLauncher.java:100)
at
com.atlassian.jira.util.system.JiraSystemRestarterImpl.ariseSirJIRAandUpgradeThySelf(JiraSystemRestarterImpl.java:44)
at
com.atlassian.jira.web.action.admin.ConfirmInstallationWithLicense.doExecute(ConfirmInstallationWithLicense.java:151)
at webwork.action.ActionSupport.execute(ActionSupport.java:153)
at
com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:59)
at
webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:141)
at
com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:181)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:44)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
at
com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:55)
at
com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:41)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.atlassian.jira.web.filters.accesslog.AccessLogFilter.executeRequest(AccessLogFilter.java:154)
at
com.atlassian.jira.web.filters.accesslog.AccessLogFilter.doFilter(AccessLogFilter.java:133)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:119)
at
com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:55)
at
com.atlassian.jira.web.filters.SitemeshExcludePathFilter.doFilter(SitemeshExcludePathFilter.java:40)
at
com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
at
com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:55)