我安装的jforum2.1.6不能分页，怎么回事？
查看了管理端的设置，当前设置是每页15个主题，可是主题已超过15了，却不分页，重启tomcat后，发现分页了，可是继续发表主题，又不分页了，

例外是：  
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18:14:48,317   INFO   [JForumBaseServlet   ]   Starting   JForum.   Debug   mode   is   true  
18:14:48,477   INFO   [ConfigLoader   ]   Using   cache   engine:   net.jforum.cache.D  
efaultCacheEngine  
18:14:48,577   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.rep  
ository.BBCodeRepository  
18:14:48,587   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.re  
pository.RankingRepository  
18:14:48,607   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.re  
pository.SmiliesRepository  
18:14:48,647   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.re  
pository.ForumRepository  
18:14:48,667   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.re  
pository.TopicRepository  
18:14:48,677   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.Se  
ssionFacade  
18:14:48,677   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.re  
pository.PostRepository  
18:14:48,687   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.ut  
il.search.quartz.QuartzSearchIndexerJob  
18:14:48,747   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.re  
pository.Tpl  
18:14:48,757   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.re  
pository.RolesRepository  
18:14:48,767   INFO   [ConfigLoader   ]   Creating   an   instance   of   net.jforum.re  
pository.SecurityRepository  
18:14:49,538   INFO   [FileMonitor   ]   Watching   E:\www\www\tomcat50\webapps\R  
OOT/WEB-INF/config/languages/en_US.properties  
18:14:49,578   INFO   [FileMonitor   ]   Watching   E:\www\www\tomcat50\webapps\R  
OOT/WEB-INF/config/languages/zh_CN.properties  
18:14:49,659   INFO   [ConfigLoader   ]   Loading   JDBC   driver   net.jforum.dao.mys  
ql.MysqlDataAccessDriver  
18:14:50,079   INFO   [FileMonitor   ]   Watching   E:\www\www\tomcat50\webapps\R  
OOT/WEB-INF/config/database/generic/generic_queries.sql  
18:14:50,079   INFO   [FileMonitor   ]   Watching   E:\www\www\tomcat50\webapps\R  
OOT/WEB-INF/config/database/mysql/mysql.sql  
18:14:50,099   INFO   [FileMonitor   ]   Watching   E:\www\www\tomcat50\webapps\R  
OOT/WEB-INF/config/SystemGlobals.properties  
18:14:50,109   INFO   [FileMonitor   ]   Watching   E:\www\www\tomcat50\webapps\R  
OOT/WEB-INF/config/jforum-custom.conf  
18:14:54,686   INFO   [ConfigLoader   ]   Loading   clickstream   config   from   E:\www  
\www\tomcat50\webapps\ROOT/WEB-INF/config/clickstream-jforum.xml   <