form validation on weblogic 8.1.2 not working, a bug?

I use the spring module (commons validator) for form validation. I use
Spring 1.2.3. My application works fine in everything on Tomcat 5.5.7.
I deployed it on Weblogic 8.1.2 simply by ONLY changing database-related
configuration and using ContextLoaderServlet instead of ContextLoaderListener.
Everything is still working except client-side form validation (server-side is still working).

When I visit a page with validation from IE, I notice that
there is an error on the page. When I save this page via IE,
I notice that the saved validator.jsp has the page's html code at its
begining and end. However, nonthing like this happens if I run it
on Tomcat 5.5.7

I did a lot of research, not progress. I am getting stuck here.
Anybod has similar experience? Is this a bug?

Any help/info is greatly appreciated.

Regards,
Pete

I am facing problems with client-side validations on Weblogic Server 10.3.
The same application works ok on Tomcat & Jetty. Has anyone else faced the same issue?

--Irshad.