Short on the heels of the Visual Studio 2008 release in November 2007, Microsoft released in early February a hot fix that contains several fixes.  I took a bit of time before jumping on the Hot fix for production projects, but there are several IDE editing and build improvements for those using ASP.NET. 

Based on the list of fixes surrounding HTML source view / HTML editing, JavaScript editing, and web site  build performance, it looks very compelling to apply this fix .  I've updated today and see no adverse side effects yet.  The hot fix installation instructions state it can be uninstalled in the future if needed.

The information on the hot fix details and the download can be found in Scott Guthrie's post VS 2008 Web Development Hot-Fix Roll-Up Available.