This is probably something you've already tried but we had a similar
problem using HP Laserjet 4L, ratio 5:1. When we turned off Print Manager
in Windows it stopped the problem. I understand you're using Mac's. Is
there something similar in a Mac system?
Judy Ann Wilson * jwils@tenet.edu * Math Teacher
Jayton-Girard ISD Box 168 Jayton, Tx 79528
(voice) 806.237-2991