过滤不好使，请问是什么原因

[GoogleCodeExporter]

<crontab start="true" schedule="30"><!--600mins-->
        <crontabfilter start="true">
        <exclude expression="api/*"></exclude>
                <exclude expression="html/*"></exclude>
                <exclude expression="phpcms/*"></exclude>
                <exclude expression="phpsso_server/*"></exclude>
                <exclude expression="statics/*"></exclude>
                <exclude expression="caches/bakup/*"></exclude>
                <exclude expression="caches/caches_admin/*"></exclude>
                <exclude expression="caches/caches_commons/*"></exclude>
                <exclude expression="caches/caches_content/*"></exclude>
                <exclude expression="caches/caches_linkage/*"></exclude>
                <exclude expression="caches/caches_member/*"></exclude>
                <exclude expression="caches/caches_model/*"></exclude>
                <exclude expression="caches/caches_scan/*"></exclude>
                <exclude expression="caches/caches_search/*"></exclude>
                <exclude expression="caches/caches_template/*"></exclude>
                <exclude expression="caches/caches_tpl_data/*"></exclude>
                <exclude expression="caches/configs/*"></exclude>
                <exclude expression="caches/sessions/*"></exclude>
                <exclude expression="caches/vote_js/*"></exclude>       </crontabfilter>
</crontab>

Original issue reported on code.google.com by fengling...@gmail.com on 9 Nov 2011 at 6:59