test running forever

Hi,

I am trying to demonstrate the benefit of using webtest in our company
I have built a very simple test to showcase how easy tests can written.

However while running this test webtest seems to enter a never ending 
loop. Any advise ?
the clickButton seems to be to problematic action. (remark there is a lot 
of javascript in the application I want to test)

Thank you,
Sebastien


<?xml version="1.0"?>

<!DOCTYPE project SYSTEM "../dtd/Project.dtd">

<project default="test">

        <target name="test">

                <webtest name="Check we can login into Maxima and logout">
                        <invoke url="http://myhost.net/mypage" 
description="Go to login page"/>
                        <verifyElement type="form" text="loginForm" />
                        <setInputField 
htmlId="loginForm:workspace_login_user_name" value="testuser" />
                        <setInputField 
htmlId="loginForm:workspace_login_password" value="password" />
                        <clickButton htmlId="loginForm:submitbutton" />
                        <verifyText text="this should be part of the page" 
/>
                        <clickLink label="logout" />
                        <verifyText text="You have logged out 
successfully." />
                </webtest>

        </target>
</project>