Interesting db_file_multiblock_read_count bug

http://dioncho.wordpress.com/2009/02/27/interesting-db_file_multiblock_read_count-bug/ 

http://wiki.ex-em.com/index.php/DB_FILE_MULTIBLOCK_READ_COUNT

db_file_multiblock_read_count 의 버그 와 나름의 해결책~