Visual studio 2008 - Find in files : lists everything twice

I had the same issue which was annoying. I just fixed it. What I've done is to change "Entire solution" to "current project" in "Look in" field when doing search. Then I noticed the result would not be doubled. After I switched back to "entire solution" the problem was gone.

If you do find in "Entire Solution", it also searches in any loaded files, even if they're already in the solution. This means that they'll be listed twice.

Perhaps this is your problem?

I use VS2003, but I get this exact result when I have the same source file in multiple projects. Are you sure you aren't searching more than one project?