in kde 3.5, when i installed a software it had an entry with the last installed software.
exist this feature in kde4 ?

What do you mean? in both kde3 and kde4 when an application is installed and it's an app with a GUI then an entry will appear in the menu for it, how is kde4 any different?

sorry for my bad english
i will try to describe better my question :

In kde 3.5 it had a special entry for recently installed applications , so you did n't need to search in kmenu to find the application that you just installed

I just tried, it didn't do this in kde3... so ??

i think it was only in kickoff menu

Ah, I see. I only use the classic menu, don't know much about kickoff.