Recently I had to modify a reporting dashboard we created in wss3 and encountered something interesting.We have 4 reports displaying on the one web part page, and then links to other reports. The problem is, that when you open the landing page, the user simply sees the “Loading Report” spinning circles, and that is annoying to say the least. So applying a simple web part configuration setting (Asynchronous Rendering), we are able to enhance the customers experience.
So, in short, the turning of the (Asynchronous Rendering) option on the reports at the top of the page, allowed the page to load once the html has been retrieved, eliminating the “Loading Report” probem we encountered. The (Asynchronous Rendering) setting was still active on the most bottom report, however the user doesn’t see this report when intially loading the screen.
This is fixed in SharePoint Foundation, thank you Microsoft.