Ok I've fixed it, the problem was actually a change to the formCheckbox view helper which used to add a hidden element for when the checkbox was unchecked. Now it's simply a checkbox so as far as ZFI is concerned it's not been 'unchecked'.
To fix this I loop through the form data looking for the checkboxes and setting them to an empty string or 0. Is there a better way to do this? How else would you filter and validate a checkbox? Thanks Simon ----- Simon Corless http://www.ajb007.co.uk/ -- View this message in context: http://www.nabble.com/Zend_Filter_Input-Checkboxes-tp16609999p16647532.html Sent from the Zend Framework mailing list archive at Nabble.com.