Add/Remove Programs List Oddness

Anyone ever noticed upon installing programs onto your computer, the image associated with that program in the add/remove program files list is oddly sometimes a picture of the program, but sometimes a computer looking icon, and it sometimes chooses one, and sometimes the another, depending on how u install the program? Why does this happen??

I have also noticed it happens with some programs more than others if at all, for example, AnyDVD, CloneDVD, CloneCD, and recently, new versions of Nero...