Why Do Files Need "Prepared" When Finding References in VS2005

Every time I try to find references to a method in a C# (ASP.NET) application I am developing, a screen always displays saying, "Preparing files for project 'MyProjectName.'

Visual Studio then appears to "index" my entire project (with a message sayi开发者_如何学Pythonng, "Preparing file 'filename' for refactoring.") This process takes very long and is becoming extremely detrimental to me being able to work quickly (10 minutes every time I want to do it). Not using the capability is not an option since I am cleaning up a lot of code.

Any suggestions? I don't see any promising settings in the properties. This does not happen on any other machine on which I use VS2005.

It appears that there was something wrong with my previous VS2005 installation. I uninstalled and performed a reinstall and everything is working how I'd expect. Marking this as the answer.