Problem with Ajax when updating to Rails 2.0


We have just moved to Rails 2.0, and now the ajax functions don't work
properly. I'm not 100% sure that the problem comes from the change of
the Rails version, but I think it is the most probably.

In fact, we have seen that the ajax requests are correctly sent to the
server, and the action is correctly processed. However, the interface
is not refreshed automatically (no ajax response). We need to refresh
the browser in order to see the changes.

Could someone help us? Might it be a problem with the rails version?

Thank you,