KDE huge fonts .. again

Hi all, Well a couple of days ago I have seen some posts about huge fonts on KDE ... I have this problem ... but unfortunately I deleted the mails ... I bought a 21" monitor just to have a nice 1600*1200 resolution, but with the huge fonts KDE is using it seems more like a 800*600 screen ! ;-) Can someone tellme how to solve (again) this problem ? Cheers Benoit Ballester