>We have an application that uses 4 main modless forms.
>
>We Hide 3 forms and view only ONE at a time.
>
>Our Problem: The Windows swap file keeps growing and
>slows our system down to a crawl within a couple hours.
>
>ANY SUGGESTIONS? When we tested by making those 4 forms
>modal, the problem went away.
>
>This is causing us SERIOUS Problems with our customer base.

Do you have code in the Hide or Deactivate method that's doing anything unusual?