Ajax ControlToolKit and Firefox default button PostBack - Server Click Event

[b]Symptoms[/b]: Default button not does not fire when enter key is pressed using Firefox. (using the ajax ControlToolkit) [b]Fix[/b]: add this property to the ASP button UseSubmitBehavior="False" So it looks like: "The problem wasn't that it didn't do a postback. That it did. What it didn't do was hit the server side event (the button click event)."