HttpInvoker incompatible with Servlet 2.3?

Hi,
I'm trying to deploy the HttpInvoker on Weblogic 8.1 sp5, and am getting a class cast exception when it comes to initialise the DispatcherServlet:
org.springframework.web.servlet.DispatcherServlet

Error casting servlet: "search-remoting" to javax.servlet.Servlet java.lang.ClassCastException

then

javax.servlet.ServletException: Servlet class: 'org.springframework.web.servlet.
DispatcherServlet' does not implement javax.servlet.Servlet

I followed this strange trail to its end, and discovered that spring 2.0 is built using Servlet 2.4.
Could this be the problem ?
Is there an alternative to using the DispatcherServlet ?

Cheers

I've rolled back to spring 1.2.8.
That seems to have solved the problem

Spring 2.0 does support Servlet 2.3 and even Servlet 2.2 for many scenarios. In your case, this simply looks like a classpath problem; did you maybe have a Servlet API jar in your WEB-INF/lib directory?

Juergen