Possible Duplicate:
Apache tomcat jQuery Ajax returning 404 if sent too quicklyt

Only tossing error when made too rapidly following a page request or any other ajax call, Does anybody know what is leading to this? Basically whip a timeout before it's always works, what are the things in Apache Tomcat that report to minimum request time or such?

are there any things in Apache Tomcat that relate to minimum request time or such?

No.

You have to try looking in your Apache log apply for what URL you're asking for that's not found.

I suspect it will likely be some synchronization problem together with your Javascript that is leading to a poor request.