from past experience if you cant get rid of them then they are in use. boot in safe mode and see if you can rid yourself of them that way. i would check for spyware as such could have same effect. what type of programs are you talking about?
From former program installations there are 2 icons left on my desktop
which have no funktion and which I cannot get rid of. The trashbasket does not accept them and there is no way to destroy them.
Your knowledge is very much appreciated