Can't print from KDE 3.2
 

I have a Slackware 9.1 system and I recently installed KDE 3.2. Since then I can't print any document using my HP Deskjet 3550 from KDE, but I can print it using OpenOffice 1.0.3, also I print a test page form "Printing Manager" it is fine.
Could you help me fix this!

Thanks!