If I put messages on index "[logstash-example-]YYYY.MM.DD" then kibana can show the log message in charts but if it's on "[example-]YYYY.MM.DD" then it won't find it. (curl query gives back the correct result in latter case)
According to documentation it should work: "For example [web-]YYYY.MM.DD,[mail-]YYYY.MM.DD Please also note that indices should rollover at midnight UTC."
(Elasticsearch 1.3.4, Kibana 3.1.0)