KMail filters

[Ted Ozolins]

I must be doing something wrong in setting the filters in KMail. I'm using 
Slackware 8.1 KDE 3.0.1.. After setting up the filter on sites or reciepients 
that I want trashed, it only does that if I manually apply the filters. Under 
col 2.4, once I set up the filters, KMail would trash those in the filter 
list. I must be overlookin something very simple here, anyone?
TIA
-- 
Ted Ozolins (VE7TVO)
Westbank, B. C.