InfoPath warning: You have made changes to the form that have not been processed. We will process the changes and show the form again. After that you have to click “Submit” again.

Online project management, task software, and free collaboration workspace: AJAXWorkspace
AJAXWorkspace is a free online workspace that offers task tracking software, team collaboration, online calendar, document sharing, and file management for project management and teamwork.

You may encounter this error during submit an InfoPath form via web browser. Here is the details of the explaination.

In short, uncheck the option: “Refresh the form before submitting it if form data might change during processing” in Tools > Form Options > Browser.