Usage Plugin logs Lucene exceptions

2008-06-23 16:14:06,183	Thread-21	ERROR	com.atlassian.confluence.ext.usage.event.UsageEventListener	Error indexing task: UsageEventWrapperTask: view:page(20217860) at Mon Jun 23 16:14:04 JST 2008: com.atlassian.bonnie.LuceneException: java.io.IOException: read past EOF
			

com.atlassian.bonnie.LuceneException: java.io.IOException: read past EOF
	at com.atlassian.bonnie.LuceneConnection.createAndConfigureWriter(LuceneConnection.java:338)
	at com.atlassian.bonnie.LuceneConnection.getWriter(LuceneConnection.java:433)
	at com.atlassian.bonnie.LuceneConnection.withWriter(LuceneConnection.java:246)
	at com.atlassian.bonnie.LuceneConnection.withWriter(LuceneConnection.java:237)
	at com.atlassian.confluence.ext.usage.index.UsageIndexManager.index(UsageIndexManager.java:206)
	at com.atlassian.confluence.ext.usage.event.UsageEventListener$1.run(UsageEventListener.java:71)
	at EDU.oswego.cs.dl.util.concurrent.QueuedExecutor$RunLoop.run(QueuedExecutor.java:89)
	at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.IOException: read past EOF
	at org.apache.lucene.store.BufferedIndexInput.refill(BufferedIndexInput.java:137)
	at org.apache.lucene.store.BufferedIndexInput.readByte(BufferedIndexInput.java:38)
	at org.apache.lucene.store.IndexInput.readInt(IndexInput.java:47)
	at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:200)
	at org.apache.lucene.index.SegmentInfos$1.doBody(SegmentInfos.java:246)
	at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:610)
	at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:243)
	at org.apache.lucene.index.IndexWriter.init(IndexWriter.java:616)
	at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:410)
	at com.atlassian.bonnie.LuceneConnection.createAndConfigureWriter(LuceneConnection.java:332)
	... 7 more