>Yes, I am using a private datasession. There are no uncommitted changes. I just trie programmatically closing those cursors before the form is released, but the datasession still does not close.

Is there a property on the form or a property of some object on the form that is holding a reference to an object created outside the form's data session? If so, you need to set that property to null or something else [like an enpty string] before releasing the form. I usually handle this in the Destroy of the object holding the reference.