In my many tests I've got this data: WinForm "void" Application, just started: 9 MB or more WinForm "void" Application, minimized: ~3 MB WinForm "void" Application, after a hour or so, not minimized: 7 MB or more IIS aspnet_wp, just started, 1 "void" web app running: 25 MB or more IIS aspnet_wp, 2 "real" web apps running: 60 MB or more "void" means an empty form (create new Windows Forms project, compile and launch it) or a simple web application with 1 page and no code. "real" means a production web application, with SQL Server/Access database Consider that .NET 2.0 consumes a little more memory. AFAIK with two or more WinForms applications running, almost no memory is re-used. This is "experimental" data, it's not much reliable. ___________________________________ Tozzi is right: Gaia is getting rid of us. My Blog [ITA]