Issue undeploying an app using an Ant target

I have added the following target to my build.xml, and when invoked, it results with the success message (below)

<target name="undeploy">
<undeploy url="${tomcat.manager}"
username="${tomcat.username}"
password="${tomcat.password}"
path="/${app.name}" />
</target>

--------------------------------------------------------------
undeploy:
[undeploy] OK - Undeployed application at context path /simple

BUILD SUCCESSFUL
Total time: 0 seconds
--------------------------------------------------------------------

However, the app doesnt get properly undeployed, as it still shows as 'running' in the tomcat manager.

Any ideas?

Can you see in the log files that Tomcat is getting accessed and is trying to undeploy the app? That would be in logs/catalina.out, I think.

Yep tomcat does get accessed according to the log, it doesnt log anything about the completion of the task. (Not sure if it's supposed to)

Apr 6, 2012 1:45:52 AM org.apache.catalina.startup.HostConfig checkResources
INFO: Undeploying context [/simple]