I would like to see more details like the error logs and which version of JSF implementation you are using etc
In my experience, there seems to be a lot of issues with the Date converters. It does not handle exceptions well. In my applications, I use a calender to input dates. This will better the user experience and minimize the need to handle of large number of exceptional cases. I take it as a string and do the required date validations on it in the BB.
Hope I have been of some help.
Regards,<br />Joe<br /> <br />"Always program as if the person who will be maintaining your program is a violent psychopath that knows where you live."<br />--Martin Golding