We have made modifications to the PHP Sample Contact Upload/Signup form as well as the Sample Campaign form to fix a cross-site scripting security hole that has been identified. If you have downloaded the sample forms on May 25, 2010 or later, these changes have already been implemented. If you had downloaded the forms prior to this date and do not wish to download the full sample pack again, please take a look at our PHP Sample XSS Vulnerability Fix documentation, which shows all of the changes that were made in detail.