What does this icon signify/stand for?

I have been searching the web with google as well as the adobe site/help docs. I have not been able to unveil the meaning that follows the appearance of this icon (next to the fileName in Bridge CS4 while browsing a directory on a server using Version Cue CS4). At first, I thought it had something to do with the 'purge cache for selection' command because after executing that command the icon disappeared and the standard icon resembling the file type appeared. That being true, the fact remains that my latest attempts using the same technique no longer remove the image. Here is a link that will show you the image/icon that I don't have a frame of reference for: http://www.garrettchristopherson.com/ImageInQuestion.html

I appreciate any help that can be offered!