We should update to 2.1.14 in Cauldron, which just fixes 2 bugs: http://www.dovecot.org/list/dovecot-news/2013-January/000239.html
Further fixes for this issue in 2.1.15: "v2.1.14's dovecot.index.cache fixes caused Dovecot to use more disk I/O and memory than was necessary." http://www.dovecot.org/list/dovecot-news/2013-February/000240.html
Summary: dovecot cache file race condition fixed in 2.1.14 => dovecot cache file race condition fixed in 2.1.15
Done
Status: NEW => RESOLVEDResolution: (none) => FIXED