Automatic indexing and mail queue flushing stops in Confluence 3.2
In Confluence 3.2, automatic indexing stops suddenly. The most noticeable effects are the Recently Updated list and the search results. There are no errors in the logs.
Confluence 3.2 was bundled with Quartz 1.6.1 (where previous versions were using 1.5.2 or earlier). This Quartz library appears to have a bug that causes the behaviour.
Upgrade quartz to 1.8.0 as described in CONF-19425.