Occasionally, when I run a build using Ctrl+F5 or just F5, Visual Studio completes the build and opens the browser but fails to actually show the site. Usually this happens the first time I'm building after opening VS, and disappears later. Anybody have any ideas why this is happening?
EDIT: Response to comments: This is Windows XP with Visual Studio Professional 2008. When I use View Source it only displays the open and close HTML tags.