There seems to be something inherently wrong with slackware and its offsprings
in using some Epson printers with the newer cups versions. In my case
Epson LQ-300 does not function properly anymore. It hangs after printing
one page and does not advance to the next one. Had to downgrade to
cups-1.4.6. I tried 3 different slackies.
In debian based boxes no such problem.
Reported it in cups and slackware forums and never go ta reply.