Victor,
Are you by chance displaying an image on _screen? If so try adding a ? "" command after the image is created.
>I've recently inherited a project from another developer. Today I was running it for the first time and noticed that each time a messagebox (or a form) pops up, that when it closes the underlying form has a white spot for a second or two where the dialog box (or other form) used to be. The projects I've done in the past don't seem to have this problem. Does anyone have a clue? Thanks.