Exception in thread "QuartzSchedulerThread" java.lang.ClassCastException: java.util.Date

On startup of Jira 3.0.3, we get the following exception

25-Jan-2005 20:53:10 org.quartz.core.QuartzScheduler start
INFO: Scheduler JiraQuartzScheduler_$_NON_CLUSTERED started.
[Filter: profiling] Using parameter [jira_profile]
[Filter: profiling] defaulting to off [autostart=false]
[Filter: profiling] Turning filter off [jira_profile=off]
Exception in thread "QuartzSchedulerThread" java.lang.ClassCastException: java.util.Date
at java.sql.Timestamp.compareTo(Timestamp.java:474)
at org.quartz.Trigger.compareTo(Trigger.java:611)
at org.quartz.simpl.TriggerComparator.compare(RAMJobStore.java:904)
at java.util.TreeMap.compare(TreeMap.java:1093)
at java.util.TreeMap.getEntry(TreeMap.java:347)
at java.util.TreeMap.remove(TreeMap.java:506)
at java.util.TreeSet.remove(TreeSet.java:223)
at org.quartz.simpl.RAMJobStore.acquireNextTrigger(RAMJobStore.java:735)
at com.atlassian.scheduler.OfBizJobStore.acquireNextTrigger(OfBizJobStore.java:479)
at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:197)
25-Jan-2005 20:53:11 com.atlassian.jira.web.dispatcher.JiraServletDispatcher init