I've only seen this when my brain has left the building but I haven't. < g >
Just a suspicion here. How are you handling your READ EVENTS/CLEAR EVENTS. Are you using a Top Level Form and is the form that "disappears" a modal/modeless form done in the screen or top level form?

>We have an error where we randomly have a screen disappear (apparently from memory). Has anyone else seen this behavior?
>
...snip