Time Since Chart Throws 'An internal server error occurred when requesting resource.'

2012-07-31 16:35:32,648 http-8282-13 ERROR admin 995x407x9 1v5ehb0 127.0.0.1 /rest/gadget/1.0/timeSince/generate [common.error.jersey.ThrowableExceptionMapper] Uncaught exception thrown by REST service
java.lang.IllegalArgumentException: Year constructor: year (11950) outside valid range.
	at org.jfree.data.time.Year.<init>(Year.java:116)
	at org.jfree.data.time.Week.getYear(Week.java:235)
	at org.jfree.data.time.Week.compareTo(Week.java:497)
	at java.util.TreeMap.getEntry(TreeMap.java:328)
	at java.util.TreeMap.get(TreeMap.java:255)
	at com.atlassian.jira.charts.TimeSinceChart$GenericDateFieldIssuesHitCollector.incrementMap(TimeSinceChart.java:230)
	at com.atlassian.jira.charts.TimeSinceChart$GenericDateFieldIssuesHitCollector.collect(TimeSinceChart.java:225)
	at com.atlassian.jira.issue.statistics.util.DocumentHitCollector.collect(DocumentHitCollector.java:34)
	at org.apache.lucene.search.IndexSearcher.searchWithFilter(IndexSearcher.java:575)
	at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:535)
	at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:323)
	at com.atlassian.jira.index.DelegateSearcher.search(DelegateSearcher.java:160)
	at com.atlassian.jira.issue.search.providers.LuceneSearchProvider.search(LuceneSearchProvider.java:245)
	at com.atlassian.jira.issue.search.providers.LuceneSearchProvider.search(LuceneSearchProvider.java:104)
	at com.atlassian.jira.charts.TimeSinceChart.generateChart(TimeSinceChart.java:99)
	at com.atlassian.jira.charts.DefaultChartFactory.generateTimeSinceChart(DefaultChartFactory.java:133)
	at sun.reflect.GeneratedMethodAccessor354.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)