Lately one of the developers of my team had been complaining that the WebForms designer was very slow. Editing properties of controls was taking forever and switch from code view to design view was a test to his patience. He was the only one in the team having this problem but it didn’t take very long for me to find out that Microsoft has published a hotfix to deal with this issue among others.

If your Visual Studio is really slow take a look at the Visual Web Developer Team Blog for the full list of issues addressed and the download link.