Hi,
Microsoft has just released the Hot fix for Visual Studio 2008, web development. The hot fix is for the performance issue caused in the VS 2008 in the HTML source View and design view. You can download this hot-fix roll-up for free here.
The hot fix solves a lot of problem related to HTML: source view performance, Design view performance, HTML Editing, Javascript Editing, Web Site build performance etc.
For more on the Installation please visit
http://weblogs.asp.net/scottgu/archive/2008/02/08/vs-2008-web-development-hot-fix-roll-up-available.aspx
Vikram