applicationContext-security - wrong redirections.

Hey There,
I would appreciate your assistance.
I've deployed my application on Tomcat5.5, configured it to work against Apache via this:
<LocationMatch ^/check/(myapp.*)$>
ProxyPassMatch ajp://localhost:8009/$1
</LocationMatch>

The intention here is to redirect every request initiated by http://<host>/check/myapp.... to myapp.war deployed on Tomcat.
The URLs specified in the applicationContext-security.xml are something like this:

<sec:session-management invalid-session-url="/jsp/public/login.jsp">
<sec:concurrency-control max-sessions="10" expired-url="/jsp/public/login.jsp" />
</sec:session-management>

Now, the problem is that navigating to http://<host>/check/myapp is being redirected to http://<host>/myapp/jsp/public/login.jsp which leads to 404, as the expected URL should be http://<host>/check/myapp/jsp/public/login.jsp

Can you please suggest what am I missing?
Thanks in advance.