From: ceo Date: December 31 2008 2:38pm Subject: Re: slow query log List-Archive: http://lists.mysql.com/mysql/215781 Message-Id: <20081231143827.58950.qmail@o2.hostbaby.com> I'm just guessing, but if the slow query log time resolution is seconds, perhaps 0.5 and higher rounds up? Or, perhaps it has an index, but it can't be used in that query. What does EXPLAIN [paste query here] tell you?