404 Error with filter

[jetlag]

I am using Resin 3.1.8 and Spring security 2.0.4. I have the below filter defined in the web.xml. I have tried it alone and with the RequestHeaderPreAuthenticatedProcessingFilter.

I am using spring mvc, webflow and tiles.

when i have the filter mapped, i can load my first page but if i click anywhere it gives me a 404 error for the template jsp in my tiles definition. when I remove the filter mapping, i can get to everything, but the security is disabled of course. i have tried about every combination i can think of of dispatchers/no dispatchers, extra filters defined in the context/no filters, various url patterns, etc. but to no avail. has anyone else had this problem? it works fine on tomcat6...is there a bug in the delegatingfilter on resin?

    <filter>
        <filter-name>springSecurityFilterChain</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>springSecurityFilterChain</filter-name>
        <url-pattern>/*</url-pattern>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>INCLUDE</dispatcher>
    <dispatcher>ERROR</dispatcher>
    </filter-mapping>

[jetlag]

heres some additional strange information. when i remove the filter, i get the form on my page posting to:

<form id="bookingForm" action="/WebGNR/searchPlain?execution=e1s1" method="post">

but when I add the filter back in i get

<form id="bookingForm" action="/WebGNR/WEB-INF/layouts/plain.jsp?execution=e1s1" method="post">

what is causing the difference? Does the filter change whatever is generating the url of the form?

[jetlag]

i was able to work around the problem by manually setting the form action to:

action="searchPlain?execution=${flowExecutionKey}"