Is multiple Windows Desktop icons a glitch?

It is not a good thing when your directory tree shows desktop for folders and files that are not. This is something I would put serious investigation into. Not a virus or malware type of behavior, but definitely a registry glitch. I would first try CCleaner and do a registry cleanup. If that fails in clearing up the problem, then I would be checking the registry in the areas where the affected folders reside. If you are not familiar with the registry, leave the job to someone who does to have a look when they have the chance.