Most used programs not displayed in start menu

Hello,
I checked that in Properties>start menu>customize> Number of start menu programs most opened I put there 6, but the space where the programs should come out does not come out. I have no idea why this happens. It is just empty. Does anyone know the solution to this problem?
Thank you

I did what you said, but the icons do not come out as the most recently used icons as well. Is this a TweakUI setup thing which I have messed it? I checked there, and I checked all that should be listed, there is a part says "allowing most frequent program to appear in start menu". That place is empty, I tried to drag and drop items there, does not seem to work at all.