Stale Lucene write.lock: Error 500 on every write/delete

[Gitz]

Hello,

Since yesterday every post, reply and admin deletion on Wikipedate Forum (forum.wikipedate.com) fails with Error 500:

Message: NAML exception in customized site: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/Users/administrator/nabble/nabble/local/lucene/531/write.lock

RequestURI: /template/NamlServlet.jtp

Server: s1.nabble.com

Posts seem to be saved anyway, so users resubmit and we now have many duplicates. I cannot delete them or the spam.

The stack trace involves only core Nabble macros (delete_node.naml, utilities.naml), not our custom code.

Could you please clear the stale lock or rebuild the index?

Thanks