This list is just a list and as such is not too smart. Many lament this area's shortcomings.
-> Look up Add Remove Pro (it's free) on google.com
-> Here's the long discussion:
why is it that when i remove a program fron add/remove on xp the name is still present and when i click on it it only says the frequency of use no size no nothing. how do you get the name off the list if it remains there after uninstall?