Double clicking on My Computer or folders causes search companion to appear
Submitted by Ryan on Friday, 21 November 2008One Comment
If you’re having a problem with double clicking on My Computer, C:, D:, E: drive itself or also when you’re double click on a folder and the search companion comes up, check out this Microsoft support article.
It’s very easy to fix although it does entail going into the registry and changing one or two things.

You made some good points there. I did a search on the topic and found most people will agree with your blog.