dolphin: slow in kde, fast in icewm

["Manuel E." <megutierrez@uci.cu>]

Hi,
I'm running KDE 4.4.5 on wheezy, while I'm in KDE dolphin has what seems 
like a reading overhead every time I click on a folder, it's really 
disturbing because there's no reason for that, previews are set off. In 
the other hand if I login in IceWm and open dolphin it's like "thunder" 
fast, equal as pcmanfm for example, I'm thinking there's some KDE 
subroutine slowing down the filebrowsing. This does'nt happen in 
krusader, it behaves ok in KDE. BTW I set off nepomuk long ago.
What is happening?

Cheers, Manuel.